Add button is not aligned with the remote video input type field

Please review.

I have verified the MR !15, the Add button is perfectly aligned and looks good to me. Attaching screenshot for the reference.

Verified using MR!15 , the apply button is aligned correctly. Attaching screenshots for desktop and mobile views

Testing steps
Install the theme and set as an admin theme
Add the media field and go to upload a media
Go to the remote video tab
and see the add button

Moving to RTBC++