Fix feedback widget and convert to CSS module (!22059) · Merge requests · Administrator / sourcegraph

Created by: pdubroy

Fixes #22039 (closed). For some reason Firefox inserts some space between two adjacent elements. The first item was in the flow (but had zero width), while the 2nd had position: absolute. The fix is to give the first item position: absolute as well, which ensures that they have the same position.
Migrate the styles to a CSS module
Remove the separate .theme-redesign styles and fold them into the main styles.
Update the styles to match the Figma designs.

NOTE FOR REVIEWERS: Each of the three things listed above ^^^ were done in separate commits, so it's easiest to review this commit by commit.

Current behavior (Chrome)

Current behavior (Firefox)

See #22039 (closed)

New behavior (Chrome, Light)

New behavior (Chrome, Dark)

New behavior (Firefox, Light)

New behavior (Firefox, Dark)