LayoutTests/fast/css/mesh-gradient/mesh-gradient-background-expected.html

<!DOCTYPE html>
<style>
div {
    width: 200px;
    height: 200px;
    background-color: lime;
}
span {
    display: block;
    position: relative;
    top: 50px;
    left: 50px;
    width: 100px;
    height: 100px;
    background-color: red;
}
</style>
<div><span></span></div>