<!DOCTYPE html>
<style>
div {
    height: 400px;
    border: 0;
}
div > div {
    width: 50%;
    float: left;
}

</style>
<p>This test PASS if you see two equally sized blue and green boxes.</p>
<div>
    <div style='background: blue;'></div>
    <div style='background: green;'></div>
</div>


