Pure CSS/CSS3 Smooth Toggle Switch

Preview:

Description:

A tutorial about creating a stylish, smooth, checkbox based switch button with CSS3 transitions.

How to use it:

The Html.

<div class="switch">
  <input type="checkbox" name="toggle">
  <label for="toggle"><i></i></label>
  <span></span>
</div>

The core CSS/CSS3 rules to transform the checkbox you created into a toggle swtich.

.switch input {
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  -ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
  filter: alpha(opacity=0);
  -moz-opacity: 0;
  opacity: 0;
  z-index: 100;
  position: absolute;
  width: 100%;
  height: 100%;
  cursor: pointer;
}
.switch {
  width: 180px;
  height: 55px;
  position: relative;
  margin: 100px auto;
}
.switch label {
  display: block;
  width: 80%;
  height: 100%;
  position: relative;
  background: #1F2736; /*#121823*/
  background: linear-gradient(#121823, #161d2b);
  border-radius: 30px 30px 30px 30px;
  box-shadow: inset 0 3px 8px 1px rgba(0,0,0,0.5),  inset 0 1px 0 rgba(0,0,0,0.5),  0 1px 0 rgba(255,255,255,0.2);
  -webkit-transition: all .5s ease;
  transition: all .5s ease;
}
.switch input ~ label i {
  display: block;
  height: 51px;
  width: 51px;
  position: absolute;
  left: 2px;
  top: 2px;
  z-index: 2;
  border-radius: inherit;
  background: #283446; /* Fallback */
  background: linear-gradient(#36455b, #283446);
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),  0 0 8px rgba(0,0,0,0.3),  0 12px 12px rgba(0,0,0,0.4);
  -webkit-transition: all .5s ease;
  transition: all .5s ease;
}
.switch label + span {
  content: "";
  display: inline-block;
  position: absolute;
  right: 0px;
  top: 17px;
  width: 18px;
  height: 18px;
  border-radius: 10px;
  background: #283446;
  background: gradient-gradient(#36455b, #283446);
  box-shadow: inset 0 1px 0 rgba(0,0,0,0.2),  0 1px 0 rgba(255,255,255,0.1),  0 0 10px rgba(185,231,253,0),  inset 0 0 8px rgba(0,0,0,0.9),  inset 0 -2px 5px rgba(0,0,0,0.3),  inset 0 -5px 5px rgba(0,0,0,0.5);
  -webkit-transition: all .5s ease;
  transition: all .5s ease;
  z-index: 2;
}
/* Toggle */
.switch input:checked ~ label + span {
  content: "";
  display: inline-block;
  position: absolute;
  width: 18px;
  height: 18px;
  border-radius: 10px;
  -webkit-transition: all .5s ease;
  transition: all .5s ease;
  z-index: 2;
  background: #b9f3fe;
  background: gradient-gradient(#ffffff, #77a1b9);
  box-shadow: inset 0 1px 0 rgba(0,0,0,0.1),  0 1px 0 rgba(255,255,255,0.1),  0 0 10px rgba(100,231,253,1),  inset 0 0 8px rgba( 61,157,247,0.8),  inset 0 -2px 5px rgba(185,231,253,0.3),  inset 0 -3px 8px rgba(185,231,253,0.5);
}
.switch input:checked ~ label i {
  left: auto;
  left: 63%;
  box-shadow: inset 0 1px 0 rgba(255,255,255,0.2),  0 0 8px rgba(0,0,0,0.3),  0 8px 8px rgba(0,0,0,0.3),  inset -1px 0 1px #b9f3fe;
  -webkit-transition: all .5s ease;
  transition: all .5s ease;
}