We are currently migrating from 7.2.2 to 8.7.1. And on this newest version we want that the boxes of the required fields turn red when the field is empty. Some boxes do turn red, but most of them don't. It doesn't matter if it's a date or text field.
I have tried to add the next line to the stylesheet:
border-color: red !important;
But didn't have any effect.
I have also tried to make adjustments in the skin, I thought the Error layout is the place to look at (but it isn't).
With F12 I have tried to locate the issue, but no luck.