<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;
    -webkit-writing-mode: vertical-rl;
}
.content-box {
    -webkit-shape-outside: content-box;
    background-clip: content-box;
    width: 30px;
    height: 30px;
    padding: 10px;
    border: 10px solid transparent;
    margin: 10px;
}
.padding-box {
    -webkit-shape-outside: padding-box;
    background-clip: padding-box;
    width: 10px;
    height: 10px;
    padding: 20px 10px;
    border: 15px solid transparent;
    margin: 15px;
}
.border-box {
    -webkit-shape-outside: border-box;
    background-clip: border-box;
    width: 10px;
    height: 10px;
    padding: 10px 5px;
    border: 5px solid transparent;
    border-bottom-width: 10px;
    margin: 30px;
}
.margin-box {
    -webkit-shape-outside: margin-box;
    width: 10px;
    height: 10px;
    padding: 4px 2px;
    border: 3px solid transparent;
    border-bottom-width: 6px;
    margin: 10px 5px;
}
.margin-box::before {
    display: block;
    margin-right: -10px;
    width: 30px;
    height: 30px;
    background-color: green;
    content: ' ';
}
.shape {
    background-color: green;
    float: left;
    border-top-width: 0;
    padding-top: 0;
    margin-top: 0;
}
</style>
</head>
<body>
    <p>These tests set the shape-outside to the various boxes (margin/border/padding/content) with writing-mode: vertical-rl. 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>