<!DOCTYPE html>

<html>
<head>
    <style>
        .box {
            height: 100px;
            width: 200px;
            margin: 10px;
            background-color: green;
            -webkit-clip-path: inset(20px 2px 0px 0px);
        }

        .second {
            box-shadow: 0 0 20px black;
        }
        
        .third {
            -webkit-writing-mode: vertical-rl;
        }
        
        .blob {
            height: 40px;
            width: 40px;
        }
        
        .composited {
            position: absolute;
            top: 10px;
            left: 10px;
            width: 50px;
            height: 400px;
            border: 1px solid blue;
            -webkit-transform: translateZ(0);
        }
        
        .composited:hover {
            -webkit-transform: none;
        }
    </style>
</head>
<body>

<div class="composited">
</div>

<div class="box" style="top: 50px;">
    <div class="blob" style="background-color: orange"></div>
    <div class="blob" style="background-color: blue"></div>
</div>
<div class="second box" style="top: 150px;">
    <div class="blob" style="background-color: orange"></div>
    <div class="blob" style="background-color: blue"></div>
</div>

<div class="third box" style="top: 250px;">
    <div class="blob" style="background-color: orange"></div>
    <div class="blob" style="background-color: blue"></div>
</div>


</body>
</html>