#rightPreviewBox:not(.sidebar-collapsed-lmtl4) {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  padding: 4rem 5dvw;
  background-color: rgba(0, 0, 0, .75);
  backdrop-filter: blur(2px);
  z-index: 9999;
  
  & > * {
    max-width: 1000px;
    margin-inline: auto;
    width: 100%;
  }
}