.video_box>h2{
	margin-bottom: 22px;
}
.video_box>span{
	float: right;
	margin-bottom: 22px;
}
.video_list{
	width: 100%;
	overflow: hidden;
}
.video_item{
	width: 350px;
	height: 290px;
	overflow: hidden;
	float: left;
	margin-bottom: 45px;
	margin-left: 45px;
	border:2px solid transparent;
	box-sizing: border-box;
	cursor: pointer;
	transition: all .5s ease;
}
.video_item:hover{
	border:2px solid #dfdfdf;
}
.video_item:nth-of-type(3n+1){
	margin-left: 0;
}
.video_item>video{
	width: 100%;
	height: 240px;
	background-color: #eee;
}
.video_item>p{
	text-align: center;
	line-height: 40px;
}