docs.rs css issues with rustdoc (responsiveness)

[cynecx]

docs.rs and rustdoc aren't playing nicely together as we can see here (it's pretty much broken):

To fix this, we should modify the selector from body > .sidebar to .rustdoc > .sidebar.

rust/src/librustdoc/html/static/rustdoc.css

Lines 959 to 967 in 775eab5

	body > .sidebar {
	height: 45px;
	min-height: 40px;
	margin: 0;
	margin-left: -15px;
	padding: 0 15px;
	position: static;
	z-index: 1;
	}

After:

By futher modifying docs.rs's css with something like:

@media (max-width: 700px) {
    div.rustdoc {
        padding-top: 0;
    }
    div.rustdoc .sidebar {
        padding-top: 0 !important;
    }
    #sidebar-filler {
        display: none;
    }
}

Final: