<link rel="match" href="reference/inline-stacking-context-ref.html" /><style>
span {
    z-index: 10;
    background: orange;
    position: relative;
    opacity: 0.5;
}
div {
    z-index: 5;
    width: 50px;
    height: 50px;
    background: green;
    position: relative;
    top: -10px;
}
</style><span>hello</span><div></div>