docs/tabs.css

.tabs, .tabs2, .tabs3 {
    background-color: white;
    width: 100%;
    z-index: 101;
    font-size: 13px;
    font-family: 'Lucida Grande',Geneva,Helvetica,Arial,sans-serif;
    display: table;
}

#navrow2, #navrow3, #navrow4 {
    border-top: 1px solid #90989A;
}

.tabs2 {
    font-size: 10px;
}
.tabs3 {
    font-size: 9px;
}

.tablist {
    margin: 0;
    padding: 0;
    display: block;
}

.tablist li {
    float: left;
    display: table-cell;
    background-color: white;
    line-height: 36px;
    list-style: none;
}

.tablist a {
    display: block;
    margin: 5px 0;
    padding: 0px 20px;
    background-color: white;
    color: #040404;
    text-decoration: none;
    outline: none;
}

.tablist a:focus {
    outline: auto;
    z-index: 10;
    position: relative;
}

.tabs3 .tablist a {
    padding: 0 10px;
}

.tablist a:hover {
    background-color: #B7BDBE;
    border-radius: 5px;
    text-decoration: none;
}

.tablist li.current {
	position: relative;
}

.tablist li.current a:after {
	content: '';
	position: absolute;
	left: 15px;
	right: 15px;
	top: 35px;
	height: 1px;
	display: block;
	background-color: #5B6364;
	border: 1px solid #5B6364;
	border-radius: 2px 2px 0px 0px;
}

#navrow4 .tablist li.current a:after {
	left: 5px;
	right: 5px;
}