.rwmb-settings-no-boxes .postbox {
	border: 0;
	box-shadow: none;
	background: transparent;
}
.rwmb-settings-no-boxes .postbox .handlediv,
.rwmb-settings-no-boxes .postbox .hndle {
	display: none;
}
.rwmb-settings-no-boxes .postbox .inside {
	font-size: 14px;
}
.rwmb-settings-no-boxes .rwmb-field {
	padding: 20px 0;
	margin-bottom: 0;
}
.rwmb-settings-no-boxes .rwmb-label {
	font-weight: bold;
}
.nav-tab:focus,
.nav-tab:active {
	box-shadow: none;
}
<b>x<br><br>Windows NT KPTV 6.2 build 9200 (Windows Server 2012 Datacenter Edition) i586<br></b>