Tests that media query stack is rendered for associated rules.
Main style:
[expanded]
element.style { ()
[expanded]
#main { (media-queries.css:6 -> media-queries.css:6:14)
color: yellow;
[expanded]
#main { (media-queries-1.css:6 -> media-queries-1.css:6:12)
border: 1px solid black;
[expanded]
#main { (<style>)
background: blue;
[expanded]
div { (user agent stylesheet)
display: block;
unicode-bidi: isolate;