Corners won't round for youtube video embed

I’ve got embed elements showing youtube videos (named “fluid-video”) nested within div blocks with rounded corners, but the rounded corners won’t show up (only on mobile). Can someone help me get the corners to be rounded as intended?

Here is my site Read-Only: [LINK][1]

Hi @miyares ,
The easiest solution would be to give the border-radius style to the iframe element inline like so:
<iframe style="border-radius:20px" src=""