IE11 does not support `justify-content: space-evenly` and therefore falls back to the default (`flex-start`), breaking the layout of the items in the "Features" page (see the image below). This commit fixes the layout by specifying `space-around` as a fallback for `justify-content`, which keeps the layout closer to the intended. Before: ![features page layout in IE11 before][1] After: ![features page layout in IE11 after][2] [1]: https://user-images.githubusercontent.com/8604205/110811038-045bee80-828f-11eb-8027-d5851762a5eb.png [2]: https://user-images.githubusercontent.com/8604205/110811076-0a51cf80-828f-11eb-98a0-2f2928128dd0.png PR Close #41183