*{}
@media (max-width: 767.98px) { 
	.ranking .nav-tabs {
		display:block;
		overflow: scroll;
		overflow-y:hidden;
		white-space: nowrap;
		padding-top: 5px;
		-webkit-overflow-scrolling : touch;
	}

	.ranking .nav-item {
		display: inline-block;
	}
}

#news_view #content, .user_exchange_detail{
	-webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
	font-family: 'Noto Serif', serif;
	/* font-family: 'Roboto', sans-serif !important; */
	color: #333 !important;
    line-height: 1.618;
    font-size: 1.1em;
	font-weight: normal;
	
}
#news_view #content img, .user_exchange_detail img{
	height: auto !important;
	max-width: 100% !important;
	margin: 0 auto;
	display: block;
}
#news_view #content .iframe{
	overflow: hidden;
	padding-top: 56.25%;
	position: relative;
}
#news_view #content iframe{
	width:100% !important;
	max-width: 100% !important;
	border: 0;
	height: 100%;
	left: 0;
	position: absolute;
	top: 0;
}

#news_view #content #toc_container {
	background: #edf6ff none repeat scroll 0 0;
	border: 1px solid #aaa;
	display: table;
	font-size: 95%;
	margin-bottom: 1em;
	
	padding: 20px;
	width: 100%;
}
#news_view #content .toc_title {
	font-weight: 700;
	text-align: center;
}
#news_view #content #toc_container li, #toc_container ul, #toc_container ul li{
	list-style: outside none none !important;
}
#news_view #content #toc_container li a{font-size: 15px}
#news_view #content .toc_title a{
	color: #337ab7 !important;
	font-weight: 400 !important;
	cursor: pointer;
}

@media (min-width: 576px) {
     .card-columns {
         column-count: 1;
    }
}
 @media (min-width: 992px) {
     .card-columns {
         column-count: 2;
    }
}
 @media (min-width: 1200px) {
     .card-columns {
         column-count: 3;
    }
	 #news_view .card-columns {
         column-count: 1;
    }
}
@media (min-width: 768px){
	nav#bd-docs-nav-x {
    max-height: 100%;
}
}

.l_card_box{
	overflow: hidden;
	height: 100px;
	width: auto;
	min-width: 60px;
    max-width: 200px;
}
.learning .popover-body{
	background: black;
	color:white;
}