<html>
<head>
<style>
.container {
    width: 90px;
    height: 90px;
    color: green;
    background-color: red;
    font: 30px/1 Ahem, sans-serif;
    margin: 10px;
    -webkit-font-smoothing: antialiased;
}
.content-box {
    -webkit-shape-outside: polygon(0 0, 100% 0, 100% 100%) content-box;
    background-clip: content-box;
    width: 30px;
    height: 30px;
    padding: 10px;
    border: 10px solid transparent;
    margin: 10px;
}
.padding-box {
    -webkit-shape-outside: polygon(0 0, 100% 0, 100% 100%) padding-box;
    background-clip: padding-box;
    width: 10px;
    height: 10px;
    padding: 10px 20px;
    border: 15px solid transparent;
    margin: 15px;
}
.border-box {
    -webkit-shape-outside: polygon(0 0, 100% 0, 100% 100%) border-box;
    background-clip: border-box;
    width: 10px;
    height: 10px;
    padding: 5px 10px;
    border: 5px solid transparent;
    border-right-width: 10px;
    margin: 30px;
}
.margin-box {
    -webkit-shape-outside: polygon(0 0, 100% 0, 100% 100%) margin-box;
    width: 10px;
    height: 10px;
    padding: 2px 4px;
    border: 3px solid transparent;
    border-right-width: 6px;
    margin: 5px 10px;
}
.margin-box::before {
    display: block;
    margin-top: -10px;
    width: 30px;
    height: 30px;
    background-color: green;
    content: ' ';
}
.shape {
    background-color: green;
    float: left;
    border-left-width: 0;
    padding-left: 0;
    margin-left: 0;
}
</style>
</head>
<body>
    <p>These tests set the shape-outside to a &lt;shape&gt; &lt;box&gt; pair, where the shape takes up its entire sizing box. They test for each of the various sizing boxes (margin/border/padding/content). They require the Ahem font. You should see green squares, with no red.</p>
    <p>shape-outside: content-box</p>
    <div class='container'>
        <div class='shape content-box'></div>
        xxx xx xxx
    </div>
    <p>shape-outside: padding-box</p>
    <div class='container'>
        <div class='shape padding-box'></div>
        xxx xx xxx
    </div>
    <p>shape-outside: border-box</p>
    <div class='container'>
        <div class='shape border-box'></div>
        xxx xx xxx
    </div>
    <p>shape-outside: margin-box</p>
    <div class='container'>
        <div class='shape margin-box'></div>
        xx xxx xxx
    </div>
</body>
</html>