Need Help Fixing Flexbox Issue with Relume Component Banner_11

Hello Lumers, I'm becoming CRAZY with a relume component I can't seem to make work : banner_11 There's no width whatsoever anywhere within the divs, I have no idea why the 2 flex items break Been spending 1 hour on this for nothing. I'd love some help https://share.cleanshot.com/XJFMGqN7