speaker-video {
  display: none;
  position: fixed;
  bottom: 5vh;
  right: 5vh;
  width: 25vh;
  height: 25vh;
  font-size: 1vh;
  border-radius: 50%;
  overflow: hidden;
  border: 2px solid #ccc;
  justify-content: center;
  align-items: center;
  /* box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1); */
  z-index: 1000;
  background-color: #fff;
}

speaker-video.show {
  display: flex;
}

speaker-video.big {
  width: 100%;
  height: 100%;
  bottom: 0;
  right: 0;
  border-radius: 0;
}

speaker-video::part(tooltip) {
  display: none;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 0.3em 0.5em;
  border-radius: 0.4em;
  font-size: 1em;
  white-space: nowrap;
}

speaker-video:hover:not(.big)::part(tooltip) {
  display: block;
}