Dialog window with partly opaque grey background












0















When the user clicks a link I want to create a 'popup' dialog box centered in the browser window with a grey overly similar to this:



Chrome Confirmation Dialog Box



Note that the user can click anywhere outside the dialog box to dismiss it.



I've tried following this example, but it just creates a black stripe in a white page like this:



Bad result - black stripe



Here is my code:






function blah() {
var gab = document.createElement('div');
gab.setAttribute('id', 'OVER');
gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
document.body.appendChild(gab);
}

#OVER {
width:100%;
height:100%;
left:0;/*IE*/
top:0;
text-align:center;
z-index:5;
position:fixed;
background-color:#fff;
}
.overlay {
width:100%;
z-index:6;
left:0;/*IE*/
top:30%;
font-color:#cdcdcd;
font-size:0.8em;
text-align:center;
position:fixed;
background-color:#000;
}

<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="css/test.css">
</head>
<body>
<h1>This is the title</h1>
Here is some text <a href="#" onclick="blah();return false;">Click me</a>
</body>
</html>












share|improve this question





























    0















    When the user clicks a link I want to create a 'popup' dialog box centered in the browser window with a grey overly similar to this:



    Chrome Confirmation Dialog Box



    Note that the user can click anywhere outside the dialog box to dismiss it.



    I've tried following this example, but it just creates a black stripe in a white page like this:



    Bad result - black stripe



    Here is my code:






    function blah() {
    var gab = document.createElement('div');
    gab.setAttribute('id', 'OVER');
    gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
    document.body.appendChild(gab);
    }

    #OVER {
    width:100%;
    height:100%;
    left:0;/*IE*/
    top:0;
    text-align:center;
    z-index:5;
    position:fixed;
    background-color:#fff;
    }
    .overlay {
    width:100%;
    z-index:6;
    left:0;/*IE*/
    top:30%;
    font-color:#cdcdcd;
    font-size:0.8em;
    text-align:center;
    position:fixed;
    background-color:#000;
    }

    <!DOCTYPE html>
    <html lang="en">
    <head>
    <meta charset="UTF-8">
    <title>Title</title>
    <link rel="stylesheet" href="css/test.css">
    </head>
    <body>
    <h1>This is the title</h1>
    Here is some text <a href="#" onclick="blah();return false;">Click me</a>
    </body>
    </html>












    share|improve this question



























      0












      0








      0








      When the user clicks a link I want to create a 'popup' dialog box centered in the browser window with a grey overly similar to this:



      Chrome Confirmation Dialog Box



      Note that the user can click anywhere outside the dialog box to dismiss it.



      I've tried following this example, but it just creates a black stripe in a white page like this:



      Bad result - black stripe



      Here is my code:






      function blah() {
      var gab = document.createElement('div');
      gab.setAttribute('id', 'OVER');
      gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
      document.body.appendChild(gab);
      }

      #OVER {
      width:100%;
      height:100%;
      left:0;/*IE*/
      top:0;
      text-align:center;
      z-index:5;
      position:fixed;
      background-color:#fff;
      }
      .overlay {
      width:100%;
      z-index:6;
      left:0;/*IE*/
      top:30%;
      font-color:#cdcdcd;
      font-size:0.8em;
      text-align:center;
      position:fixed;
      background-color:#000;
      }

      <!DOCTYPE html>
      <html lang="en">
      <head>
      <meta charset="UTF-8">
      <title>Title</title>
      <link rel="stylesheet" href="css/test.css">
      </head>
      <body>
      <h1>This is the title</h1>
      Here is some text <a href="#" onclick="blah();return false;">Click me</a>
      </body>
      </html>












      share|improve this question
















      When the user clicks a link I want to create a 'popup' dialog box centered in the browser window with a grey overly similar to this:



      Chrome Confirmation Dialog Box



      Note that the user can click anywhere outside the dialog box to dismiss it.



      I've tried following this example, but it just creates a black stripe in a white page like this:



      Bad result - black stripe



      Here is my code:






      function blah() {
      var gab = document.createElement('div');
      gab.setAttribute('id', 'OVER');
      gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
      document.body.appendChild(gab);
      }

      #OVER {
      width:100%;
      height:100%;
      left:0;/*IE*/
      top:0;
      text-align:center;
      z-index:5;
      position:fixed;
      background-color:#fff;
      }
      .overlay {
      width:100%;
      z-index:6;
      left:0;/*IE*/
      top:30%;
      font-color:#cdcdcd;
      font-size:0.8em;
      text-align:center;
      position:fixed;
      background-color:#000;
      }

      <!DOCTYPE html>
      <html lang="en">
      <head>
      <meta charset="UTF-8">
      <title>Title</title>
      <link rel="stylesheet" href="css/test.css">
      </head>
      <body>
      <h1>This is the title</h1>
      Here is some text <a href="#" onclick="blah();return false;">Click me</a>
      </body>
      </html>








      function blah() {
      var gab = document.createElement('div');
      gab.setAttribute('id', 'OVER');
      gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
      document.body.appendChild(gab);
      }

      #OVER {
      width:100%;
      height:100%;
      left:0;/*IE*/
      top:0;
      text-align:center;
      z-index:5;
      position:fixed;
      background-color:#fff;
      }
      .overlay {
      width:100%;
      z-index:6;
      left:0;/*IE*/
      top:30%;
      font-color:#cdcdcd;
      font-size:0.8em;
      text-align:center;
      position:fixed;
      background-color:#000;
      }

      <!DOCTYPE html>
      <html lang="en">
      <head>
      <meta charset="UTF-8">
      <title>Title</title>
      <link rel="stylesheet" href="css/test.css">
      </head>
      <body>
      <h1>This is the title</h1>
      Here is some text <a href="#" onclick="blah();return false;">Click me</a>
      </body>
      </html>





      function blah() {
      var gab = document.createElement('div');
      gab.setAttribute('id', 'OVER');
      gab.innerHTML='<div class="overlay"><h1>hello</h1></div>';
      document.body.appendChild(gab);
      }

      #OVER {
      width:100%;
      height:100%;
      left:0;/*IE*/
      top:0;
      text-align:center;
      z-index:5;
      position:fixed;
      background-color:#fff;
      }
      .overlay {
      width:100%;
      z-index:6;
      left:0;/*IE*/
      top:30%;
      font-color:#cdcdcd;
      font-size:0.8em;
      text-align:center;
      position:fixed;
      background-color:#000;
      }

      <!DOCTYPE html>
      <html lang="en">
      <head>
      <meta charset="UTF-8">
      <title>Title</title>
      <link rel="stylesheet" href="css/test.css">
      </head>
      <body>
      <h1>This is the title</h1>
      Here is some text <a href="#" onclick="blah();return false;">Click me</a>
      </body>
      </html>






      html css






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 22 '18 at 2:43









      Muhammad

      2,10321734




      2,10321734










      asked Nov 22 '18 at 2:25









      MarkMark

      1,61042333




      1,61042333
























          3 Answers
          3






          active

          oldest

          votes


















          1














          This should work:



          // JS, replace this
          gab.innerHTML='<div class="overlay"><div class="dialog"><h1>hello</h1></div></div>';


          // CSS
          .overlay {
          position: absolute;
          top: 0;
          left: 0;
          right: 0;
          bottom: 0;
          background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
          display: flex;
          justify-content: center;
          align-items: center;
          flex-direction: column;
          }

          .dialog {
          background-color: #fff;
          }





          share|improve this answer
























          • Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

            – Mark
            Nov 22 '18 at 3:14











          • Awesome. Glad it help.

            – fmontes
            Nov 22 '18 at 3:16



















          0














          the code I edited from yours






          function blah() {
          var gab = document.createElement('div');
          gab.setAttribute('id', 'OVER');
          gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
          document.body.appendChild(gab);
          }

          #OVER {
          width: 100%;
          height: 100%;
          left: 0;
          /*IE*/
          top: 0;
          text-align: center;
          z-index: 5;
          position: fixed;
          background-color: rgba(0,0,0,0.3);
          }

          .overlay {
          width: 100%;
          z-index: 6;
          left: 0;
          /*IE*/
          top: 30%;
          /* font-color: #cdcdcd; */
          color: #cdcdcd;
          font-size: 0.8em;
          text-align: center;
          position: fixed;
          background-color: #fff
          }

          <h1>This is the title</h1>
          Here is some text <a href="#" onclick="blah();return false;">Click me</a>





          But, If I were you, I am trying to make the modal like this



          I just added toggle.



          It is NOT the best code to make modal.



          It is just for reference.






          function modalOn() {
          let gab = document.createElement('div');
          gab.setAttribute('id', 'OVER');
          gab.setAttribute('onClick', 'modalOff()');
          gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
          document.body.appendChild(gab);
          }

          function modalOff() {
          let modal = document.getElementById('OVER');
          document.body.removeChild(modal);
          }

          #OVER {
          width: 100%;
          height: 100%;
          left: 0;
          /*IE*/
          top: 0;
          text-align: center;
          z-index: 5;
          position: fixed;
          background-color: rgba(0,0,0,0.3);
          }

          .overlay {
          width: 100%;
          z-index: 6;
          left: 0;
          /*IE*/
          top: 30%;
          color: #cdcdcd;
          font-size: 0.8em;
          text-align: center;
          position: fixed;
          background-color: #000;
          }

          <h1>This is the title</h1>
          Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>








          share|improve this answer































            0














            Thanks to fmontes I ended up with this code which seems to work:



            // css:

            .overlay {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            }

            .dialog {
            background-color: #fff;
            }

            // html:

            <!DOCTYPE html>
            <html lang="en">
            <head>
            <meta charset="UTF-8">
            <title>Title</title>
            <link rel="stylesheet" href="css/test.css">


            </head>
            <body>

            <h1>This is the title</h1>
            Here is some text <a href="#" onclick="document.getElementById('overlay').style.visibility = 'visible';return false;">Click me</a>
            <div id='overlay' class="overlay" onclick="document.getElementById('overlay').style.visibility = 'hidden';return false;" style="visibility:hidden">
            <div class="dialog"><h1>hello</h1></div></div>
            </body>
            </html>





            share|improve this answer

























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              3 Answers
              3






              active

              oldest

              votes








              3 Answers
              3






              active

              oldest

              votes









              active

              oldest

              votes






              active

              oldest

              votes









              1














              This should work:



              // JS, replace this
              gab.innerHTML='<div class="overlay"><div class="dialog"><h1>hello</h1></div></div>';


              // CSS
              .overlay {
              position: absolute;
              top: 0;
              left: 0;
              right: 0;
              bottom: 0;
              background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
              display: flex;
              justify-content: center;
              align-items: center;
              flex-direction: column;
              }

              .dialog {
              background-color: #fff;
              }





              share|improve this answer
























              • Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

                – Mark
                Nov 22 '18 at 3:14











              • Awesome. Glad it help.

                – fmontes
                Nov 22 '18 at 3:16
















              1














              This should work:



              // JS, replace this
              gab.innerHTML='<div class="overlay"><div class="dialog"><h1>hello</h1></div></div>';


              // CSS
              .overlay {
              position: absolute;
              top: 0;
              left: 0;
              right: 0;
              bottom: 0;
              background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
              display: flex;
              justify-content: center;
              align-items: center;
              flex-direction: column;
              }

              .dialog {
              background-color: #fff;
              }





              share|improve this answer
























              • Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

                – Mark
                Nov 22 '18 at 3:14











              • Awesome. Glad it help.

                – fmontes
                Nov 22 '18 at 3:16














              1












              1








              1







              This should work:



              // JS, replace this
              gab.innerHTML='<div class="overlay"><div class="dialog"><h1>hello</h1></div></div>';


              // CSS
              .overlay {
              position: absolute;
              top: 0;
              left: 0;
              right: 0;
              bottom: 0;
              background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
              display: flex;
              justify-content: center;
              align-items: center;
              flex-direction: column;
              }

              .dialog {
              background-color: #fff;
              }





              share|improve this answer













              This should work:



              // JS, replace this
              gab.innerHTML='<div class="overlay"><div class="dialog"><h1>hello</h1></div></div>';


              // CSS
              .overlay {
              position: absolute;
              top: 0;
              left: 0;
              right: 0;
              bottom: 0;
              background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
              display: flex;
              justify-content: center;
              align-items: center;
              flex-direction: column;
              }

              .dialog {
              background-color: #fff;
              }






              share|improve this answer












              share|improve this answer



              share|improve this answer










              answered Nov 22 '18 at 2:34









              fmontesfmontes

              25318




              25318













              • Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

                – Mark
                Nov 22 '18 at 3:14











              • Awesome. Glad it help.

                – fmontes
                Nov 22 '18 at 3:16



















              • Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

                – Mark
                Nov 22 '18 at 3:14











              • Awesome. Glad it help.

                – fmontes
                Nov 22 '18 at 3:16

















              Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

              – Mark
              Nov 22 '18 at 3:14





              Thanks that worked! But to handle the 'click to dismiss' action I removed the blah() method and placed the overlay div at the end of the html - see my answer

              – Mark
              Nov 22 '18 at 3:14













              Awesome. Glad it help.

              – fmontes
              Nov 22 '18 at 3:16





              Awesome. Glad it help.

              – fmontes
              Nov 22 '18 at 3:16













              0














              the code I edited from yours






              function blah() {
              var gab = document.createElement('div');
              gab.setAttribute('id', 'OVER');
              gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
              document.body.appendChild(gab);
              }

              #OVER {
              width: 100%;
              height: 100%;
              left: 0;
              /*IE*/
              top: 0;
              text-align: center;
              z-index: 5;
              position: fixed;
              background-color: rgba(0,0,0,0.3);
              }

              .overlay {
              width: 100%;
              z-index: 6;
              left: 0;
              /*IE*/
              top: 30%;
              /* font-color: #cdcdcd; */
              color: #cdcdcd;
              font-size: 0.8em;
              text-align: center;
              position: fixed;
              background-color: #fff
              }

              <h1>This is the title</h1>
              Here is some text <a href="#" onclick="blah();return false;">Click me</a>





              But, If I were you, I am trying to make the modal like this



              I just added toggle.



              It is NOT the best code to make modal.



              It is just for reference.






              function modalOn() {
              let gab = document.createElement('div');
              gab.setAttribute('id', 'OVER');
              gab.setAttribute('onClick', 'modalOff()');
              gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
              document.body.appendChild(gab);
              }

              function modalOff() {
              let modal = document.getElementById('OVER');
              document.body.removeChild(modal);
              }

              #OVER {
              width: 100%;
              height: 100%;
              left: 0;
              /*IE*/
              top: 0;
              text-align: center;
              z-index: 5;
              position: fixed;
              background-color: rgba(0,0,0,0.3);
              }

              .overlay {
              width: 100%;
              z-index: 6;
              left: 0;
              /*IE*/
              top: 30%;
              color: #cdcdcd;
              font-size: 0.8em;
              text-align: center;
              position: fixed;
              background-color: #000;
              }

              <h1>This is the title</h1>
              Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>








              share|improve this answer




























                0














                the code I edited from yours






                function blah() {
                var gab = document.createElement('div');
                gab.setAttribute('id', 'OVER');
                gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                document.body.appendChild(gab);
                }

                #OVER {
                width: 100%;
                height: 100%;
                left: 0;
                /*IE*/
                top: 0;
                text-align: center;
                z-index: 5;
                position: fixed;
                background-color: rgba(0,0,0,0.3);
                }

                .overlay {
                width: 100%;
                z-index: 6;
                left: 0;
                /*IE*/
                top: 30%;
                /* font-color: #cdcdcd; */
                color: #cdcdcd;
                font-size: 0.8em;
                text-align: center;
                position: fixed;
                background-color: #fff
                }

                <h1>This is the title</h1>
                Here is some text <a href="#" onclick="blah();return false;">Click me</a>





                But, If I were you, I am trying to make the modal like this



                I just added toggle.



                It is NOT the best code to make modal.



                It is just for reference.






                function modalOn() {
                let gab = document.createElement('div');
                gab.setAttribute('id', 'OVER');
                gab.setAttribute('onClick', 'modalOff()');
                gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                document.body.appendChild(gab);
                }

                function modalOff() {
                let modal = document.getElementById('OVER');
                document.body.removeChild(modal);
                }

                #OVER {
                width: 100%;
                height: 100%;
                left: 0;
                /*IE*/
                top: 0;
                text-align: center;
                z-index: 5;
                position: fixed;
                background-color: rgba(0,0,0,0.3);
                }

                .overlay {
                width: 100%;
                z-index: 6;
                left: 0;
                /*IE*/
                top: 30%;
                color: #cdcdcd;
                font-size: 0.8em;
                text-align: center;
                position: fixed;
                background-color: #000;
                }

                <h1>This is the title</h1>
                Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>








                share|improve this answer


























                  0












                  0








                  0







                  the code I edited from yours






                  function blah() {
                  var gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  /* font-color: #cdcdcd; */
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #fff
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="blah();return false;">Click me</a>





                  But, If I were you, I am trying to make the modal like this



                  I just added toggle.



                  It is NOT the best code to make modal.



                  It is just for reference.






                  function modalOn() {
                  let gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.setAttribute('onClick', 'modalOff()');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  function modalOff() {
                  let modal = document.getElementById('OVER');
                  document.body.removeChild(modal);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #000;
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>








                  share|improve this answer













                  the code I edited from yours






                  function blah() {
                  var gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  /* font-color: #cdcdcd; */
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #fff
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="blah();return false;">Click me</a>





                  But, If I were you, I am trying to make the modal like this



                  I just added toggle.



                  It is NOT the best code to make modal.



                  It is just for reference.






                  function modalOn() {
                  let gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.setAttribute('onClick', 'modalOff()');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  function modalOff() {
                  let modal = document.getElementById('OVER');
                  document.body.removeChild(modal);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #000;
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>








                  function blah() {
                  var gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  /* font-color: #cdcdcd; */
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #fff
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="blah();return false;">Click me</a>





                  function blah() {
                  var gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  /* font-color: #cdcdcd; */
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #fff
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="blah();return false;">Click me</a>





                  function modalOn() {
                  let gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.setAttribute('onClick', 'modalOff()');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  function modalOff() {
                  let modal = document.getElementById('OVER');
                  document.body.removeChild(modal);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #000;
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>





                  function modalOn() {
                  let gab = document.createElement('div');
                  gab.setAttribute('id', 'OVER');
                  gab.setAttribute('onClick', 'modalOff()');
                  gab.innerHTML = '<div class="overlay"><h1>hello</h1></div>';
                  document.body.appendChild(gab);
                  }

                  function modalOff() {
                  let modal = document.getElementById('OVER');
                  document.body.removeChild(modal);
                  }

                  #OVER {
                  width: 100%;
                  height: 100%;
                  left: 0;
                  /*IE*/
                  top: 0;
                  text-align: center;
                  z-index: 5;
                  position: fixed;
                  background-color: rgba(0,0,0,0.3);
                  }

                  .overlay {
                  width: 100%;
                  z-index: 6;
                  left: 0;
                  /*IE*/
                  top: 30%;
                  color: #cdcdcd;
                  font-size: 0.8em;
                  text-align: center;
                  position: fixed;
                  background-color: #000;
                  }

                  <h1>This is the title</h1>
                  Here is some text <a href="#" onclick="modalOn();return false;">Click me</a>






                  share|improve this answer












                  share|improve this answer



                  share|improve this answer










                  answered Nov 22 '18 at 2:38









                  zynknzynkn

                  3,94321031




                  3,94321031























                      0














                      Thanks to fmontes I ended up with this code which seems to work:



                      // css:

                      .overlay {
                      position: fixed;
                      top: 0;
                      left: 0;
                      right: 0;
                      bottom: 0;
                      background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
                      display: flex;
                      justify-content: center;
                      align-items: center;
                      flex-direction: column;
                      }

                      .dialog {
                      background-color: #fff;
                      }

                      // html:

                      <!DOCTYPE html>
                      <html lang="en">
                      <head>
                      <meta charset="UTF-8">
                      <title>Title</title>
                      <link rel="stylesheet" href="css/test.css">


                      </head>
                      <body>

                      <h1>This is the title</h1>
                      Here is some text <a href="#" onclick="document.getElementById('overlay').style.visibility = 'visible';return false;">Click me</a>
                      <div id='overlay' class="overlay" onclick="document.getElementById('overlay').style.visibility = 'hidden';return false;" style="visibility:hidden">
                      <div class="dialog"><h1>hello</h1></div></div>
                      </body>
                      </html>





                      share|improve this answer






























                        0














                        Thanks to fmontes I ended up with this code which seems to work:



                        // css:

                        .overlay {
                        position: fixed;
                        top: 0;
                        left: 0;
                        right: 0;
                        bottom: 0;
                        background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
                        display: flex;
                        justify-content: center;
                        align-items: center;
                        flex-direction: column;
                        }

                        .dialog {
                        background-color: #fff;
                        }

                        // html:

                        <!DOCTYPE html>
                        <html lang="en">
                        <head>
                        <meta charset="UTF-8">
                        <title>Title</title>
                        <link rel="stylesheet" href="css/test.css">


                        </head>
                        <body>

                        <h1>This is the title</h1>
                        Here is some text <a href="#" onclick="document.getElementById('overlay').style.visibility = 'visible';return false;">Click me</a>
                        <div id='overlay' class="overlay" onclick="document.getElementById('overlay').style.visibility = 'hidden';return false;" style="visibility:hidden">
                        <div class="dialog"><h1>hello</h1></div></div>
                        </body>
                        </html>





                        share|improve this answer




























                          0












                          0








                          0







                          Thanks to fmontes I ended up with this code which seems to work:



                          // css:

                          .overlay {
                          position: fixed;
                          top: 0;
                          left: 0;
                          right: 0;
                          bottom: 0;
                          background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
                          display: flex;
                          justify-content: center;
                          align-items: center;
                          flex-direction: column;
                          }

                          .dialog {
                          background-color: #fff;
                          }

                          // html:

                          <!DOCTYPE html>
                          <html lang="en">
                          <head>
                          <meta charset="UTF-8">
                          <title>Title</title>
                          <link rel="stylesheet" href="css/test.css">


                          </head>
                          <body>

                          <h1>This is the title</h1>
                          Here is some text <a href="#" onclick="document.getElementById('overlay').style.visibility = 'visible';return false;">Click me</a>
                          <div id='overlay' class="overlay" onclick="document.getElementById('overlay').style.visibility = 'hidden';return false;" style="visibility:hidden">
                          <div class="dialog"><h1>hello</h1></div></div>
                          </body>
                          </html>





                          share|improve this answer















                          Thanks to fmontes I ended up with this code which seems to work:



                          // css:

                          .overlay {
                          position: fixed;
                          top: 0;
                          left: 0;
                          right: 0;
                          bottom: 0;
                          background-color: rgba(0, 0, 0, 0.4); // 0.4 is the opacity;
                          display: flex;
                          justify-content: center;
                          align-items: center;
                          flex-direction: column;
                          }

                          .dialog {
                          background-color: #fff;
                          }

                          // html:

                          <!DOCTYPE html>
                          <html lang="en">
                          <head>
                          <meta charset="UTF-8">
                          <title>Title</title>
                          <link rel="stylesheet" href="css/test.css">


                          </head>
                          <body>

                          <h1>This is the title</h1>
                          Here is some text <a href="#" onclick="document.getElementById('overlay').style.visibility = 'visible';return false;">Click me</a>
                          <div id='overlay' class="overlay" onclick="document.getElementById('overlay').style.visibility = 'hidden';return false;" style="visibility:hidden">
                          <div class="dialog"><h1>hello</h1></div></div>
                          </body>
                          </html>






                          share|improve this answer














                          share|improve this answer



                          share|improve this answer








                          edited Nov 26 '18 at 2:40

























                          answered Nov 22 '18 at 3:17









                          MarkMark

                          1,61042333




                          1,61042333






























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