.rwmb-tab-nav {
	margin-bottom: -1px;
}

.rwmb-tab-nav li {
	display: inline-block;
	margin-right: 5px;
	margin-bottom: -1px;
	padding: 0;
	border: 1px solid #dfdfdf;
	border-bottom: 0 none;
}

.rwmb-tab-nav .rwmb-tab-active {
	border: 1px solid #dfdfdf;
	border-bottom-color: transparent;
	background: #fdfdfd;
	border-bottom: none;
}

.rwmb-tab-nav a {
	display: inline-block;
	padding: 9px 12px 10px;
	vertical-align: top;
	text-decoration: none;
	font-size: 14px;
	color: #313131;
	font-weight: bold;
	background: #eee;
}

.rwmb-tab-nav a:active, .rwmb-tab-nav a:focus {
	outline: none;
	box-shadow: none;
}

.rwmb-tab-nav i,
.rwmb-tab-nav img {
	vertical-align: middle;
	margin-right: .3em;
}

.rwmb-tab-nav i {
	width: 16px;
	height: 16px;
	font-size: 16px;
}

.rwmb-tab-nav img {
	width: 12px;
	height: 12px;
	display: inline-block;
}

.rwmb-tab-active a {
	color: #333;
	background: #fff;
}

.rwmb-tab-panel {
	padding: 10px 5px;
	border-top: solid 1px #dfdfdf;
	background: #fdfdfd;
	display: none;
}

.rwmb-tabs-box .rwmb-tab-nav li {
	background: #ebebeb;
	border: 1px solid #dedede;
	margin-right: 5px;
}

.rwmb-tabs-box .rwmb-tab-nav li:hover {
	background: #fff;
}

.rwmb-tabs-box .rwmb-tab-nav a {
	color: #777;
}

.rwmb-tabs-box .rwmb-tab-nav .rwmb-tab-active {
	border-bottom-color: transparent;
}

.rwmb-tabs-box .rwmb-tab-nav .rwmb-tab-active,
.rwmb-tabs-box .rwmb-tab-nav .rwmb-tab-active:hover {
	background: #f5f5f5;
}

.rwmb-tabs-box .rwmb-tab-nav .rwmb-tab-active a {
	color: #555;
}

.rwmb-tabs-box .rwmb-tab-panel {
	background: #f5f5f5;
	border: solid 1px #dedede;
}

.rwmb-tabs-box .rwmb-clone {
	background-color: transparent;
}

.rwmb-tabs-left {
	overflow: hidden;
	margin: -6px -12px -12px;
}

.rwmb-tabs-left .rwmb-tab-nav {
	float: left;
	margin: 0 -1px 0 0;
	background: #fdfdfd;
	border-right: 1px solid #dfdfdf;
	z-index: 9;
}

.rwmb-tabs-left .rwmb-tab-nav li {
	display: block;
}

.rwmb-tabs-left .rwmb-tab-nav li:first-child {
	border-top: none;
}

.rwmb-tabs-left .rwmb-tab-nav a {
	padding: 5px 20px 8px 10px;
}

.rwmb-tabs-left .rwmb-tab-active {
	border: 1px solid #dfdfdf;
	border-right-color: #fff;
	border-left: 2px #2ea2cc;
	box-shadow: 0 2px 0 rgba(0, 0, 0, 0.02), 0 1px 0 rgba(0, 0, 0, 0.02);
	background: #fff;
	position: relative;
	right: -1px;
}

.rwmb-tabs-left .rwmb-tab-panels {
	overflow: auto;
	border-left: 1px solid #dfdfdf;
	z-index: 1;
}

.rwmb-tabs-left .rwmb-tab-panel {
	padding: 10px 20px;
	background: transparent;
	border: none;
}

.rwmb-tabs-no-controls {
	border: 0;
	background: transparent;
}

.rwmb-tabs-no-controls .hndle,
.rwmb-tabs-no-controls .handlediv {
	display: none;
}

.rwmb-tabs-no-controls .inside {
	margin: 0;
	padding: 0;
}
<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>