.da_container{
		background-color: #fff;
		padding: 40px 10px;
		font-size: 15px;
		color: #363636;
		width: 100%;
	}

	.da_container .video_title{
		width: 100%;
		line-height: 1em;
		font-size: 26px;
		padding: 0 15px;
	}

	.video_player_container{
		padding: 25px 15px;
		box-sizing: border-box;	
	}
	.video_player_container .video_container{
		position: relative;
		overflow: hidden;
		width: 100%;
		padding-top: 67.84%;
		background-color: #000;
		/*padding-bottom: 65%;*/
		/*padding-top: 20px;*/
		cursor: pointer;
	}
	.video_player_container .video_container img{
		position: absolute;
		top: 0px;
		display: block;
		width: 100%;
		height: 100%;
	}
	#videoContent div{
		padding-bottom: 0px !important;
	}
	.video_player_container .video_publish_time{
		margin-top: 30px;
		line-height: 1em;
		color: #868686;
	}
	.video_player_container .video_description{
		line-height: 1.5em;
		margin-top: 10px;				
	}
	.video_list{
		margin-top: 25px;
		box-sizing: border-box;
		overflow-y: scroll;
	}
	.video_list li:first-child{
		padding-top: 0;
	}
	.video_list li{
		padding: 5px 0;
		cursor: pointer;
		display: flex;
		justify-content: space-between;
		align-items: center;
	}	
	.video_list li img{
		width: 130px;
		height: 88px;
	}
	.video_list li .video_name{
		white-space: nowrap;
		text-overflow: ellipsis;
		overflow: hidden;
		padding-left: 15px;
		flex: 1;
	}
	.player_btn {
	    cursor: pointer;
	    width: 77px;
	    height: 77px;
	    margin: auto;
	    position: absolute;
	    left: 0px;
	    right: 0px;
	    top: 0px;
	    bottom: 0px;
	    background-image: url(../../image/play.png);
	    background-repeat: no-repeat;
	    background-size: 100% 100%;
	    transition: all .5s;
	    -webkit-transition: all .5s;
	    z-index: 1;
	}
	.player_btn:hover{
		background-image: url('../../image/play_hover.png');
	}
@media(min-width: 768px){
	.video_list{
		height: 485px;
	}
	.da_container .video_player_container{
		width: 66.6%;
		float: left;
	}
	.da_container .video_list{
		width: 33.3%;
		float: left;
		padding: 0 15px;	
	}
	#intro_container .nav_list{
		height: 90px;
	}
	.video_btn{
		position: absolute;
		width: 3em;
		height: 3em;
	    border: .1em solid rgba(249, 249, 249, 0.6);
	    top: 50%;
	    left: 50%;
	}

}
@media(max-width: 767px){
	.da_container{
		padding: 30px 6%;
		box-sizing: border-box;
	}
	.da_container .video_player_container{
		width: 100%;
		padding: 25px 0;
	}
	.da_container .video_title {
		padding: 0;
	}
	.da_container .video_list{
		width: 100%;
		overflow-y: scroll;
		max-height: 485px;;
	}

	.video_list::-webkit-scrollbar {
		width: 8px;
	}
	.video_list::-webkit-scrollbar-track {
		-webkit-border-radius: 2em;
		-moz-border-radius: 2em;
		border-radius:2em;
	}
	.video_list::-webkit-scrollbar-thumb {
		-webkit-border-radius: 2em;
		-moz-border-radius: 2em;
		border-radius:2em;
	}
	
}