Slow down spinners when `prefers-reduced-motion: reduce` (!31882) · Merge requests · Bootstrap / bootstrap

Merged Administrator requested to merge main-fod-slower-spinners into main Oct 13, 2020

Created by: ffoodd

Very simple enhancement to slow down spinners when reduced motion are requested. Somehow relates to #30081 — deeper thinking:

pausing the animation could be misunderstood as failing to load content;
impossible to know how long the animation would be, no way to determine if we're above some WCAG threshold for animations durations and cycles.

So this PR basically just ensure to slow down animation, thus prevents flashing colors (most probably with growing spinners, but hey, who knows).

As usual, feel free to discard this if it's over-engineered in any way.