CodePen

HTML

            
              <div></div>
            
          
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CSS

            
              div {
  border-top:80px solid #C1C1C1;
  border-left:45px solid transparent;
  border-right:45px solid transparent;
  padding:0 8px 0 0;
  height:0;
  width:120px;
  position: relative;
  margin: 2em auto;
  &:before {
    border-top:90px solid #000;
    border-left:50px solid transparent;
    border-right:50px solid transparent;
    padding:0 8px 0 0;
    height:0;
    width:130px; 
    position: absolute;
    top: -85px;
    left: -55px;
    content: "";
    z-index: -1;
  }
}
            
          
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JS

            
              
            
          
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