- Remove all css for file headers in `diff.scss` to `files.scss` - Remove duplicated css in `files.scss`. Since `.file-title` and `.file-title-flex-parent` are always on the same element, these two blocks are actually duplicated. - Make all heights align with `8px` grid system (https://design.gitlab.com/layout/spacing) - Button group height is `30px` - `5px` padding should be `8px`, `12px` or `16px` - *bonus:* remove `-1px` hacks all over the diff nav header ## Places to look for regressions - MR diffs - Compare versions - view commit - Readme on project home page - view file - Edit file