.zoom {
  width: 8px;
  height: 8px;
  border-radius: 8px;
  display: inline-block;
  position: relative;
  border: 2px solid currentColor;
}

.zoom:before {
  content: '';
  width: 1px;
  height: 6px;
  background: currentColor;
  display: block;
  top: 1px;
  left: 3px;
  position: absolute;
}

.zoom:after {
  content: '';
  height: 1px;
  width: 5px;
  background: currentColor;
  display: block;
  top: 3px;
  left: 1px;
  position: absolute;
}

.zoom-inner {
  width: 6px;
  height: 3px;
  display: block;
  background: currentColor;
  position: absolute;
  top: 7px;
  left: 7px;
  transform: rotate(45deg);
  -webkit-transform: rotate(45deg);
}