* {
    box-sizing: border-box;
}

body {
  display: flex;
  flex-direction: column;
  margin: 0;
  overflow: hidden;
  height: 100dvh;
}

#workarea {
  position: relative;
  background-color: black;
  flex: 1;
  overflow: hidden;
}

#timeline {
  font-family: Arial, Helvetica, sans-serif;
  width: 100dvw;
  max-height: 80dvh;
  height: 440px;
  overflow: hidden;
  background-color: var(--main-back-color);
  padding: 4px 4px 4px 4px;
}

.circle {
  display: flex;
  position: absolute;
  font-size: 0.8em;
  border-radius: 50%;
  border: 4px solid;
  transform: translate(-50%, 50%);
  z-index: 50;
  align-items: center;
  justify-content: center;
  color: white;
  aspect-ratio: 1 / 1;
  pointer-events: none;
}
.icon-button {
    width: 26px;
    height: 26px;
    border: none;
    padding: 1px;
    margin: 1px;
    fill: var(--channel-label-back-color);
}

.icon-button.selected {
  background-color: #ff8339;
}

.icon-button.active {
  background-color: #3baa5f
}

  ul div {
    height: 32px;
    background-color: gray;
    border-bottom: 4px solid var(--main-back-color);
  }