_background.scss

#app-mount {
  .layers-3iHuyZ:before {
    content: "";
    background: var(--background-image);
    background-position: var(--background-image-position, center);
    background-size: var(--background-image-size, cover);
    background-repeat: var(--background-image-repeat, no-repeat);
    height: calc(100vh + (var(--background-image-blur) * 2));
    width: calc(100vw + (var(--background-image-blur) * 2));
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    position: absolute;
    filter: blur(var(--background-image-blur));
    pointer-events: none;
    user-select: none;
  }
  [role="menu"],
  .autocompleteInner-zh20B_,
  .container-3ayLPN,
  .container-enaOkj,
  .container-2dqNWc,
  .contextMenu-HLZMGh:not(.scroller-2FKFPG),
  .emojiPicker-3PwZFl,
  .messagesPopoutWrap-1MQ1bW,
  .modal-yWgWj-:not(.slide-2pHaq5),
  .root-1gCeng:not(.fullscreenOnMobile-1bD22y),
  .root-SR8cQa,
  .subMenuContext-2n_9YM .scrollerWrap-2lJEkd,
  [class*="userPopout"][aria-modal="true"],
  section.positionContainer-3unAXC .drawerSizingWrapper-27qFHb,
  .quickswitcher-3JagVE,
  .root-1gCeng.wrapper-2ZbzR9,
  .modalRoot-1Kx4Hb,
  .container-3JTnYm.thin-1ybCId.scrollerBase-289Jih,
  .popoutContainer-1MXdqN,
  .root-1gCeng:not(.modal-qgFCbT),
  .container-3XJ8ns,
  .container-7uh5fX,
  .popout-APcvZm {
    overflow: hidden !important;
    position: relative;
    border-radius: 3px;
    &:before {
      content: "";
      background: linear-gradient(var(--tint), var(--tint)), var(--popout-modal-image);
      background-position: var(--popout-modal-position, center);
      background-size: var(--popout-modal-size, cover);
      background-attachment: var(--popout-modal-attachment, fixed);
      background-repeat: var(--popout-modal-repeat, no-repeat);
      box-shadow: inset 0 0 0 100vmax rgba(0,0,0,var(--popout-modal-brightness));
      height: calc(100% + var(--popout-modal-blur) * 5);
      width: calc(100% + var(--popout-modal-blur) * 5);
      top: calc(var(--popout-modal-blur) / -1 * 2.5);
      left: calc(var(--popout-modal-blur) / -1 * 2.5);
      position: absolute;
      filter: blur(var(--popout-modal-blur));
      pointer-events: none;
      user-select: none;
      z-index: -1;
    }
  }
}