Invidious Theatre Mode by ksmarty

/* ==UserStyle==
@name         Invidious Theatre Mode
@version      v1.0.0
@namespace    userstyles.world/user/ksmarty
@description  Adds a theatre/theater mode to Invidious. Includes full-width black background & controls!
@author       ksmarty
@license      No License
==/UserStyle== */

@-moz-document url-prefix("https://yewtu.be/watch?v=") {
#player > div:nth-child(9),
#player > div:nth-child(10) {
    height: 100%;
    top: 0;
    z-index: -1;
    background: #000;
}

.vjs-control-bar,
#player > div:nth-child(9),
#player > div:nth-child(10) {
    width: calc(100vw - 16px) !important;
    position: absolute !important;
    left: calc(((100vw - 100% - 16px) / -2) - 1px) !important;
}
}