input[type="checkbox"].ios8-switch {
  position: absolute;
  margin: 8px 0 0 16px;
}
input[type="checkbox"].ios8-switch + label {
  position: relative;
  padding: 5px 0 0 50px;
  line-height: 2em;
}
input[type="checkbox"].ios8-switch + label:before {
  content: "";
  position: absolute;
  display: block;
  left: 0;
  top: 0;
  width: 40px; /* x*5 */
  height: 24px; /* x*3 */
  border-radius: 16px; /* x*2 */
  background: #fff;
  border: 1px solid #d9d9d9;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
input[type="checkbox"].ios8-switch + label:after {
  content: "";
  position: absolute;
  display: block;
  left: 0px;
  top: 0px;
  width: 24px; /* x*3 */
  height: 24px; /* x*3 */
  border-radius: 16px; /* x*2 */
  background: #fff;
  border: 1px solid #d9d9d9;
  -webkit-transition: all 0.3s;
  transition: all 0.3s;
}
input[type="checkbox"].ios8-switch + label:hover:after {
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.3);
}
input[type="checkbox"].ios8-switch:checked + label:after {
  margin-left: 16px;
}
input[type="checkbox"].ios8-switch:checked + label:before {
  background: #00883F;
}

/* SMALL */

input[type="checkbox"].ios8-switch-sm {
  margin: 5px 0 0 10px;
}
input[type="checkbox"].ios8-switch-sm + label {
  position: relative;
  padding: 0 0 0 32px;
  line-height: 1.3em;
}
input[type="checkbox"].ios8-switch-sm + label:before {
  width: 25px; /* x*5 */
  height: 15px; /* x*3 */
  border-radius: 10px; /* x*2 */
}
input[type="checkbox"].ios8-switch-sm + label:after {
  width: 15px; /* x*3 */
  height: 15px; /* x*3 */
  border-radius: 10px; /* x*2 */
}
input[type="checkbox"].ios8-switch-sm + label:hover:after {
  box-shadow: 0 0 3px rgba(0, 0, 0, 0.3);
}
input[type="checkbox"].ios8-switch-sm:checked + label:after {
  margin-left: 10px; /* x*2 */
}

/* LARGE */

input[type="checkbox"].ios8-switch-lg {
  margin: 10px 0 0 20px;
}
input[type="checkbox"].ios8-switch-lg + label {
  position: relative;
  padding: 7px 0 0 60px;
  line-height: 2.3em;
}
input[type="checkbox"].ios8-switch-lg + label:before {
  width: 50px; /* x*5 */
  height: 30px; /* x*3 */
  border-radius: 20px; /* x*2 */
}
input[type="checkbox"].ios8-switch-lg + label:after {
  width: 30px; /* x*3 */
  height: 30px; /* x*3 */
  border-radius: 20px; /* x*2 */
}
input[type="checkbox"].ios8-switch-lg + label:hover:after {
  box-shadow: 0 0 8px rgba(0, 0, 0, 0.3);
}
input[type="checkbox"].ios8-switch-lg:checked + label:after {
  margin-left: 20px; /* x*2 */
}