JSFiddle - React, Tailwind, and code Playground

by Nir Azuelos

HTML

<div id="box">
    Hello World!
</div>

CSS

#box {
    position: relative;
    width: 60%;
    background: #ddd;
    -moz-border-radius: 4px;
    border-radius: 4px;
    padding: 2em 1.5em;
    color: rgba(0,0,0, .8);
    text-shadow: 0 1px 0 #fff;
    line-height: 1.5;
    margin: 60px auto;
    font-family: Sans-Serif;
    font-weight: bold;
    text-align: center;
}

#box:before {
    content: '';
    position: absolute;
    width: 21%;
    height: 125px;
    top: 1px;
    right: -94px;
    z-index: -1;
    background: #333;
    -webkit-transform: skew(40deg);
    
        -webkit-mask-position: 0 0;
-webkit-mask-size: 10px 10px;
-webkit-mask-box-image: -webkit-gradient(linear, left top, left bottom, 
   color-stop(0.00,  rgba(0,0,0,1)),
        color-stop(0.70,  rgba(0,0,0,1)),
   color-stop(0.90,  rgba(0,0,0,0.5)),
   color-stop(1.00,  rgba(0,0,0,0)));
}

#box:after {
content: '';
    position: absolute;
    height: 40px;
    width: 100%;
    bottom: -39px;
    left: 18px;
    z-index: 1;
    -webkit-transform: skew(40deg);
    background: #333;
    
    -webkit-mask-position: 0 0;
-webkit-mask-size: 10px 10px;
-webkit-mask-box-image:
    -webkit-gradient(linear, left top, left bottom, 
   color-stop(0.00,  rgba(0,0,0,1)),
   color-stop(0.50,  rgba(0,0,0,0.5)),
   color-stop(1.00,  rgba(0,0,0,0)));
    
}