@collapsed-icon-size: 36px;

.collapsed {
  position: absolute;
  z-index: 3;
  width: 24px;
  height: @collapsed-icon-size;
  line-height: @collapsed-icon-size;
  font-size: 18px;
  color: #777;
  cursor: pointer;
  background: #f8f9fc;
  text-align: center;
}