Uhr in Youtubevideo

div[style^='border-block-style: initial; border-inline: initial; border-end-end-radius: initial; border-end-start-radius: initial; border-start-end-radius: initial; border-start-start-radius: initial; border-block-width: initial; border-block-color: initial; overflow-block: initial; overflow-inline: initial; overscroll-behavior-block: initial; overscroll-behavior-inline: initial;'] {
  display: none !important;

  > div {
    left: 50% !important;
    right: auto !important;
    transform: translateX(-50%) !important;
  }
}

@-moz-document url-prefix('https://www.youtube.com') {
  div[style^='border-block-style: initial; border-inline: initial; border-end-end-radius: initial; border-end-start-radius: initial; border-start-end-radius: initial; border-start-start-radius: initial; border-block-width: initial; border-block-color: initial; overflow-block: initial; overflow-inline: initial; overscroll-behavior-block: initial; overscroll-behavior-inline: initial;'] {
    display: block !important;
  }
}

@-moz-document domain(google.com) {
body { 
  background-image: url(https://images5.alphacoders.com/574/thumb-1920-574971.jpg) !important; 
  }
}