The 'mw-workspace-container' class is present on both
the footer and the sidebar. The CSS rule should only hide
the latter.
When there is no table of contents on the page, and the sidebar
is closed, the content
should always span the grid columns and the sidebar container
closed.
Bug: T293443
Change-Id: I852b9024fbd21339b7c78dbb4deba811ab17c7e7
It gracefully degrades to a single column
layout on grade C browsers, IE11, and Safari 9.
Bug: T303484
Change-Id: Iaa3c1bee146dc39b1259a1ce712a29c6b22305d1