<html>
<head>
<style>
.container {
    font: 50px/1 Ahem, sans-serif;
    -webkit-font-smoothing: antialiased;
    color: green;
}

.shape-outside {
    width: 100px;
    height: 100px;
    float: left;
    -webkit-shape-outside: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100px' height='100px'><rect x='0' y='50' width='50' height='50' fill='blue'/></svg>");
}
</style>
<script>
window.onload = function() {
    var container = document.querySelector('.container');
    var shape = document.createElement('div');
    shape.className = 'shape-outside';
    container.insertBefore(shape, container.firstChild);
}
</script>
</head>
<body>
<div class='container'>
<p>X<br>X<br>X</p>
</div>
</body>
</html>