5c0122f7fd
IE11 does not recognize the `<main>` element as a block element and therefore it does not apply margin/paddings/widths as expected. This resulted in the layout of docs pages being broken in IE11 (see the image below). This commit fixes the layout by explicitly setting `.sidenav-content` (which is a `<main>` element) to `display: block`. Before: ![docs pages layout in IE11 before][1] After: ![docs pages layout in IE11 after][2] [1]: https://user-images.githubusercontent.com/8604205/110808902-1b014600-828d-11eb-9eef-c1234dc2d436.png [2]: https://user-images.githubusercontent.com/8604205/110808907-1ccb0980-828d-11eb-91d9-06e5cfafc894.png PR Close #41183
