<html>
<head>
<style>
.container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100px;
    height: 100px;
    font: 30px / 1 Ahem, sans-serif;
    color: red;
    border: 1px solid green;
    border-top: 5px solid green;
}
.shape-outside {
    width: 100px;
    height: 100px;
    background-color: rgba(15, 117, 117, 0.5);
}
.leftFloatTriangle {
    -webkit-shape-outside: polygon(0px 0px, 100px 50px, 0px 100px);
    float: left;
}
.rightFloatTriangle {
    -webkit-shape-outside: polygon(100px 0px, 0px 50px, 100px 100px);
    float: right;
}
.leftFloatUpperLeftTirangle {
    -webkit-shape-outside: polygon(0px 0px, 100px 0px, 0px 100px);
    float: left;
}
.rightFloatUpperRightTriangle {
    -webkit-shape-outside: polygon(100px 0px, 0px 0px, 100px 100px);
    float: right;
}
.overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 102px;
    height: 106px;
    background-color: green;
}
</style>
</script>
</head>
<body>
<div class="container">
    <div class="shape-outside leftFloatTriangle"></div> X X
</div>
<div class="container" style="left: 140px;">
    <div class="shape-outside rightFloatTriangle"></div> X X
</div>
<div class="container" style="top: 140px;">
    <div class="shape-outside leftFloatUpperLeftTirangle"></div> X X
</div>
<div class="container" style="top: 140px; left: 140px;">
    <div class="shape-outside rightFloatUpperRightTriangle"></div> X X
</div>
<div class="overlay"></div>
<div class="overlay" style="left: 140px"></div>
<div class="overlay" style="top: 140px"></div>
<div class="overlay" style="top: 140px; left: 140px;"></div>

<p style="margin-top: 280px;">The content should wrap around the triangle shapes, it should fit in the content box, so you should see four green rectangles.
You shouldn't see any red.</p>
<p><a href='http://webkit.org/b/128693'>Bug 128693</a>: [CSS Shapes] Adjust lineTop position to the next available wrapping location at shape-outsides</p>
</body>
</html>