Слайдер на CSS3

<ul class="slider">
  <li>
  <input type="radio" id="slide1" name="slide" checked>
  <label for="slide1"></label>
  <img src="1.png">
  </li>
  <li>
  <input type="radio" id="slide2" name="slide">
  <label for="slide2"></label>
  <img src="2.png">
  </li>
  <li>
  <input type="radio" id="slide3" name="slide">
  <label for="slide3"></label>
  <img src="3.png">
  </li>
  <li>
  <input type="radio" id="slide4" name="slide">
  <label for="slide4"></label>
  <img src="4.png">
  </li>
</ul>

<style type="text/css">
.slider {
  background-color: #fff;
  box-shadow: inset 0 0 2px hsla(0,0%,0%,.2),
  0 3px 1px hsla(0,0%,100%,.75),
  0 -1px 1px 2px hsla(0,0%,0%,.1);
  height: 15em;
  left: 50%;
  margin: -8em -13em;
  padding: .5em;
  position: absolute;
  top: 50%;
  width: 25em;
}
/* Рамка*/
.slider:before {
  background-color: #22130c;
  bottom: -2.5em;
  box-shadow: inset 0 1px 1px 1px hsla(0,0%,100%,.2),
  inset 0 -2px 1px hsla(0,0%,0%,.4),
  0 5px 50px hsla(0,0%,0%,.25),
  0 20px 20px -15px hsla(0,0%,0%,.2),
  0 30px 20px -15px hsla(0,0%,0%,.15),
  0 40px 20px -15px hsla(0,0%,0%,.1);
  content: '';
  left: -2.5em;
  position: absolute;
  right: -2.5em;
  top: -2.5em;
  z-index: -1;
}
/* yraaa.ru */
.slider:after {
  background-color: #fff5e5;
  bottom: -1.5em;
  box-shadow: 0 2px 1px hsla(0,0%,100%,.2),
  0 -1px 1px 1px hsla(0,0%,0%,.4),
  inset 0 2px 3px 1px hsla(0,0%,0%,.2),
  inset 0 4px 3px 1px hsla(0,0%,0%,.2),
  inset 0 6px 3px 1px hsla(0,0%,0%,.1);
  content: '';
  left: -1.5em;
  position: absolute;
  right: -1.5em;
  top: -1.5em;
  z-index: -1;
}
/* Слайды */
.slider li {
  box-shadow: 0 -1px 0 2px hsla(0,0%,0%,.03);
  list-style:none;
  position: absolute;
}
.slider input {
  display: none;
}
/* Переключатели */
.slider label {
  background-color: #111;
  background-image: -webkit-linear-gradient(transparent, hsla(0,0%,0%,.25));
  background-image: -moz-linear-gradient(transparent, hsla(0,0%,0%,.25));
  background-image: -ms-linear-gradient(transparent, hsla(0,0%,0%,.25));
  background-image: -o-linear-gradient(transparent, hsla(0,0%,0%,.25));
  background-image: linear-gradient(transparent, hsla(0,0%,0%,.25));
  border: .2em solid transparent;
  bottom: .5em;
  border-radius: 100%;
  cursor: pointer;
  display: block;
  height: .5em;
  left: 24em;
  opacity: 0;
  position: absolute;
  width: .5em;
  visibility: hidden;
  z-index: 10;
  -webkit-transition: .25s;
  -moz-transition: .25s;
  -ms-transition: .25s;
  -o-transition: .25s;
  transition: .25s;
}
.slider label:after {
  border-radius: 100%;
  bottom: -.2em;
  box-shadow: inset 0 0 0 .2em #111,
  inset 0 2px 2px #000,
  0 1px 1px hsla(0,0%,100%,.25);
  content: '';
  left: -.2em;
  position: absolute;
  right: -.2em;
  top: -.2em;
}
.slider:hover label {
  opacity: 1;
  visibility: visible;
}
.slider input:checked + label {
  background-color: #fff;
}
.slider:hover li:nth-child(1) label {
  left: .5em;
  -webkit-transition: .25s;
  -moz-transition: .25s;
  -ms-transition: .25s;
  -o-transition: .25s;
  transition: .25s;
}
.slider:hover li:nth-child(2) label {
  left: 2em;
  -webkit-transition: .25s .05s;
  -moz-transition: .25s .05s;
  -ms-transition: .25s .05s;
  -o-transition: .25s .05s;
  transition: .25s .05s;
}
.slider:hover li:nth-child(3) label {
  left: 3.5em;
  -webkit-transition: .25s .1s;
  -moz-transition: .25s .1s;
  -ms-transition: .25s .1s;
  -o-transition: .25s .1s;
  transition: .25s .1s;
}
.slider:hover li:nth-child(4) label {
  left: 5em;
  -webkit-transition: .25s .15s;
  -moz-transition: .25s .15s;
  -ms-transition: .25s .15s;
  -o-transition: .25s .15s;
  transition: .25s .15s;
}
/* Images */
.slider img {
  height: 15em;
  opacity: 0;
  width: 25em;
  vertical-align: top;
  visibility: hidden;
  -webkit-transition: .25s;
  -moz-transition: .25s;
  -ms-transition: .25s;
  -o-transition: .25s;
  transition: .25s;
}
.slider li input:checked ~ img {
  opacity: 1;
  visibility: visible;
  z-index: 10;
}
</style>