Change header backgrounds to use fewer different colors in web UI (#25577)

Fix search not being easily findable on smaller screens in web UI (#25576)

Change labels and styles on the onboarding screen in web UI (#25559)

Add onboarding prompt when home feed too slow in web UI (#25267)

Change design of dropdowns in web UI (#25107)

Fix autocomplete suggestions being cut off in compose form (#25275)

Change follow button in account row to be more obvious in web UI (#24956)

Fix overflow behavior of account rows (#25131)

Fix prev/next buttons color in media viewer (#25231)

Change composer highlight border size to be more noticeable (#25010)

Fix videos being improperly positioned on safari (#24943)

Fix compose textarea scroll behavior (#24872)

Fix incorrect box shadow on avatar in thread view  (#24800)

Add ALT badges to media that has alternative text in web UI (#24782)

Change media elements to use aspect-ratio rather than compute height themselves (#24686)

Bump stylelint-config-standard-scss from 7.0.1 to 9.0.0 (#24755)

Co-authored-by: Yamagishi Kazutoshi <ykzts@desire.sh>

Fix pop-in player placeholder layout in thread view (#24715)

Fix audio player width in thread view (#24713)

Fix thread lines in right-to-left locales (#24714)

Fix wrong classes `audio` and `video` instead of `audio-player` and `video-player` in CSS (#24711)