This commit improves the layout and appearance of the "Press kit" page. Most notable changes include: - Center content and limit max width to 50em (which is 50px by default). - Remove uppercase transform for headings. - Use a two-column layout for icons (instead of one icon per row). - Show "download" icons next to download links. Before (wide): ![presskit page (wide) before][1] Before (narrow 1/2): ![presskit page (narrow 1/2) before][2] Before (narrow 2/2): ![presskit page (narrow 2/2) before][3] After (wide): ![presskit page (wide) after][4] After (narrow 1/2): ![presskit page (narrow 1/2) after][5] After (narrow 2/2): ![presskit page (narrow 2/2) after][6] This change is based on code from #36045. [1]: https://user-images.githubusercontent.com/8604205/108739632-80d79900-753d-11eb-8ddc-ac542ec5b3ac.png [2]: https://user-images.githubusercontent.com/8604205/108739641-82a15c80-753d-11eb-9b20-8119ad117460.png [3]: https://user-images.githubusercontent.com/8604205/108739643-83d28980-753d-11eb-8afa-2d7a5e87d586.png [4]: https://user-images.githubusercontent.com/8604205/108739638-8208c600-753d-11eb-99bb-ea119640de39.png [5]: https://user-images.githubusercontent.com/8604205/108739642-8339f300-753d-11eb-9b25-5c1988adb1dd.png [6]: https://user-images.githubusercontent.com/8604205/108739645-846b2000-753d-11eb-8ef3-b6a8b7c6d1ff.png Co-authored-by: Stefanie Fluin <sjtrimble@gmail.com> PR Close #40945