Last time I checked, web-browsers today still do not allow you to style the appearance of built-in HTML validation messages [1]; this wouldn't be so bad if Chrome (and Firefox) still conformed to their OS platform UI guidelines (i.e. so it looks system-generated, like how `title=""` tooltips used to be), instead Chrome uses this ugly yellow/orange icon color with black-text on a white background on a bubble with a fixed corner border radius - it clashes horribly with my current project's aesthetics.
Annoyingly, Chrome used to allow styling of validation-messages using vendor-prefixed pseudoelement selectors, but they removed that functionality and never brought it back; I'll chuck this on the same pile as other arbitrary annoyances like "can we have a native HTML combo-box please" and "why is <select multiple> still a horribly unusable ctrl+click box instead of a checkbox-list?".
[1] https://stackoverflow.com/questions/5328883/how-do-i-style-t...
Annoyingly, Chrome used to allow styling of validation-messages using vendor-prefixed pseudoelement selectors, but they removed that functionality and never brought it back; I'll chuck this on the same pile as other arbitrary annoyances like "can we have a native HTML combo-box please" and "why is <select multiple> still a horribly unusable ctrl+click box instead of a checkbox-list?".