.tsb-casing {
  background-color: #4CD964;
  border-color: #ECF0F1;
  border-width: 1px 1px 1px 1px;
  border-style: solid;
  width: 1em;
  border-radius: 10px;
  position: relative;
}

.tsb-state {
  width: 20px;
  height: 1em;
  position: absolute;
}

.tsb-ball {
  background-color: #fff;
  width: 1em;
  height: 1em;
  border-radius: 1em;
  position: absolute;
  vertical-align: central;
  left: 0px;
}