CSS Doesn't Work With Child Theme, but Works With Custom CSS Section.

Why the f Divi ignores css if I add it to child theme, but renders correctly if I put it in Custom css section?

Theme is enqueued in functions.php correctly.

I'm trying to add simple code:

/Remove padding and set the background color for the tabs/ .ds-tab-navigation .et_pb_all_tabs { padding: 0; background: #ffffff !important; border-top: 0; }