Dawn theme troubleshooting - urgent

[GTLOfficial]

Hello @Sivadarshan
Go to online store ----> themes ----> actions ----> edit code ----> base.css
add this code at the end of the file and save.

@media screen and (max-width: 768px) {
#nitroPopUpIframeContainer {
  display: none !important;
}
}

result

If this was helpful, hit the like button and accept the solution.
Thanks