Triangle with box shadow and not equal width












0














I am looking to have a left arrow that is 40px by 20px with a box-shadow. I have tried



The single right border approach -- the dimensions work perfectly, but then there is a square box border:



.item {
...

&::before {
content: '';
border-bottom: 20px solid transparent;
border-right: 20px solid #fff;
border-top: 20px solid transparent;
box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
height: 0;
left: -20px;
position: absolute;
top: 50%;
transform: translateY(-50%);
width: 0;
}
}


and the double border approach -- box shadow works great, but the dimensions are incorrect since it needs to be a perfect square for the triangle to work:



.item {
...

&::before {
border: 20px solid black;
border-color: transparent transparent #fff #fff;
transform-origin: 0 0;
transform: rotate(45deg);
box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
}


}



Is it possible to achieve with CSS or do I just need to a use an SVG?










share|improve this question



























    0














    I am looking to have a left arrow that is 40px by 20px with a box-shadow. I have tried



    The single right border approach -- the dimensions work perfectly, but then there is a square box border:



    .item {
    ...

    &::before {
    content: '';
    border-bottom: 20px solid transparent;
    border-right: 20px solid #fff;
    border-top: 20px solid transparent;
    box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
    height: 0;
    left: -20px;
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    }
    }


    and the double border approach -- box shadow works great, but the dimensions are incorrect since it needs to be a perfect square for the triangle to work:



    .item {
    ...

    &::before {
    border: 20px solid black;
    border-color: transparent transparent #fff #fff;
    transform-origin: 0 0;
    transform: rotate(45deg);
    box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
    }


    }



    Is it possible to achieve with CSS or do I just need to a use an SVG?










    share|improve this question

























      0












      0








      0







      I am looking to have a left arrow that is 40px by 20px with a box-shadow. I have tried



      The single right border approach -- the dimensions work perfectly, but then there is a square box border:



      .item {
      ...

      &::before {
      content: '';
      border-bottom: 20px solid transparent;
      border-right: 20px solid #fff;
      border-top: 20px solid transparent;
      box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
      height: 0;
      left: -20px;
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 0;
      }
      }


      and the double border approach -- box shadow works great, but the dimensions are incorrect since it needs to be a perfect square for the triangle to work:



      .item {
      ...

      &::before {
      border: 20px solid black;
      border-color: transparent transparent #fff #fff;
      transform-origin: 0 0;
      transform: rotate(45deg);
      box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
      }


      }



      Is it possible to achieve with CSS or do I just need to a use an SVG?










      share|improve this question













      I am looking to have a left arrow that is 40px by 20px with a box-shadow. I have tried



      The single right border approach -- the dimensions work perfectly, but then there is a square box border:



      .item {
      ...

      &::before {
      content: '';
      border-bottom: 20px solid transparent;
      border-right: 20px solid #fff;
      border-top: 20px solid transparent;
      box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
      height: 0;
      left: -20px;
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      width: 0;
      }
      }


      and the double border approach -- box shadow works great, but the dimensions are incorrect since it needs to be a perfect square for the triangle to work:



      .item {
      ...

      &::before {
      border: 20px solid black;
      border-color: transparent transparent #fff #fff;
      transform-origin: 0 0;
      transform: rotate(45deg);
      box-shadow: -3px 3px 3px 0 rgba(0, 0, 0, 0.4);
      }


      }



      Is it possible to achieve with CSS or do I just need to a use an SVG?







      css sass






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Nov 12 at 2:10









      Jamie

      4472620




      4472620
























          1 Answer
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          0














          You can use filter: drop-shadow instead of box-shadow:



              filter: drop-shadow(-3px 3px 3px rgba(0, 0, 0, 0.4));


          ref: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/drop-shadow






          share|improve this answer





















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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            You can use filter: drop-shadow instead of box-shadow:



                filter: drop-shadow(-3px 3px 3px rgba(0, 0, 0, 0.4));


            ref: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/drop-shadow






            share|improve this answer


























              0














              You can use filter: drop-shadow instead of box-shadow:



                  filter: drop-shadow(-3px 3px 3px rgba(0, 0, 0, 0.4));


              ref: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/drop-shadow






              share|improve this answer
























                0












                0








                0






                You can use filter: drop-shadow instead of box-shadow:



                    filter: drop-shadow(-3px 3px 3px rgba(0, 0, 0, 0.4));


                ref: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/drop-shadow






                share|improve this answer












                You can use filter: drop-shadow instead of box-shadow:



                    filter: drop-shadow(-3px 3px 3px rgba(0, 0, 0, 0.4));


                ref: https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/drop-shadow







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 12 at 3:28









                Ali

                1147




                1147






























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