Pure CSS Tab System using :target

dabblet.css

/**
 * Pure CSS Tab System using :target
 */
 
body {
  font-family: sans-serif;
}

.tabrow {
  text-align: center;
  list-style: none;
  margin: 200px 0 20px;
  padding: 0;
  line-height: 24px;
  height: 26px;
  overflow: hidden;
  font-size:13px;
  position: relative;
}

.tabrow li {
  border: 1px solid #AAA;
  background: linear-gradient(top, #ECECEC 50%, #D1D1D1 100%);
  display: inline-block;
  position: relative;
  z-index: 0;
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
  box-shadow: 0 3px 3px rgba(0, 0, 0, 0.4), inset 0 1px 0 #FFF;
  text-shadow: 0 1px #FFF;
  margin: 0 -5px;
  padding: 0 20px;
}

.tabrow li:hover {
  background: linear-gradient(top, #FFFFFF 0%, #D1D1D1 100%);
}

.tabrow a {
  color: #555;
  text-decoration: none;
}

li#lorem:target,
li#ipsum:target,
li#sit:target,
li#con:target {
  background: #FFF;
  color: #333;
  z-index: 2;
  border-bottom-color: #FFF;
  padding-bottom:5px;
}

.tabrow:before {
  position: absolute;
  content: " ";
  width: 100%;
  bottom: 0;
  left: 0;
  border-bottom: 1px solid #AAA;
  z-index: 1;
}

.tabrow li:before,
.tabrow li:after {
  border: 1px solid #AAA;
  position: absolute;
  bottom: -1px;
  top:19px;
  width: 5px;
  height: 5px;
  content: " ";
}
		
.tabrow li:before {
  left: -6px;
  border-bottom-right-radius: 6px;
  border-width: 0 1px 1px 0;
  box-shadow: 2px 2px 0 #D1D1D1;
}
		
.tabrow li:after {
  right: -6px;
  border-bottom-left-radius: 6px;
  border-width: 0 0 1px 1px;
  box-shadow: -2px 2px 0 #D1D1D1;
}

.tabrow li:target:before {
  box-shadow: 2px 2px 0 #FFF;
}

.tabrow li:target:after {
  box-shadow: -2px 2px 0 #FFF;
}
		
		

dabblet.html

<ul class="tabrow">
	<li id="lorem">
		<a href="#lorem">Lorem</a>
	</li>
	<li id="ipsum">
		<a href="#ipsum">Ipsum</a>
	</li>
	<li id="sit"class="selected">
		<a href="#sit">Sit amet</a>
	</li>
	<li id="con">
		<a href="#con">Consectetur adipisicing</a>
	</li>
</ul>

settings.json

{"view":"split-vertical","prefixfree":"1","page":"css"}