SourceCode/jiouosdp/bstrap/b2/exp/exp.css

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 .open > .dropdown-menu {
 	display: block;
 }
 .dropdown-menu.pull-right {
 	left: auto;
 	right: 0;
 }
 .dropdown-menu {
 	list-style: outside none none;
 }
 .dropdown-menu {
 	background-clip: padding-box;
 	background-color: #fff;
 	border: 1px solid rgba(0, 0, 0, 0.2);
 	border-radius: 0;
 	box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
 	display: none;
 	float: left;
 	left: 0;
 	list-style: outside none none;
 	margin: 1px 0 0;
 	min-width: 160px;
 	padding: 0 0 6px;
 	position: absolute;
 	top: 100%;
 	z-index: 1000;
 }
 .dropdown-menu li > a:hover,
 .dropdown-menu li > a:focus,
 .dropdown-submenu:hover > a {
 	background-color: #eee;
 	background-image: linear-gradient(to bottom, #eee, #eee);
 	background-repeat: repeat-x;
 	color: #333;
 }
 .dropdown-menu .active > a,
 .dropdown-menu .active > a:hover {
 	background-color: #eee;
 	background-image: linear-gradient(to bottom, #eee, #eee);
 	background-repeat: repeat-x;
 	color: #333;
 }