.banner_img{

	position: relative;

}

.banner_last{

	position: absolute;

	left: 50px;

	top: calc(50% - 38px);

	cursor: pointer;

	background: rgba(255,255,255,0.5);

	border-radius: 8px;

}

.banner_next{

	position: absolute;

	right: 50px;

	top: calc(50% - 38px);

	cursor: pointer;

	background: rgba(255,255,255,0.5);

	border-radius: 8px;

}
.video_ul{
	margin: 0 auto;
	width: 1200px;
	position: relative;
}
.video_ul img{
	position: absolute;
    width: 80px;
    left: calc(50% - 40px);
    top: calc(50% - 40px);
    z-index: 1111;
    box-shadow: 0 0 5px #fff;
    border-radius: 50%;
    background: #fff;
	cursor: pointer;
}
.titles_box{

	width: 100%;

	height: auto;

	overflow: hidden;

	margin: 35px 0 30px 0;

}

.titles_text{

	width: 100%;

	height: auto;

	overflow: hidden;

	font-size: 0;

	font-weight: bold;

	text-align: center;

}

.titles_text span{

	font-size: 34px;

}

.titles_tast{

	letter-spacing: 3px;

    margin: 0 10px 0 14px;

}

.titles_desc{

	width: 100%;

	height: auto;

	overflow: hidden;

	font-size: 18px;

	text-align: center;

	color: #666;

	line-height: 20px;

	padding-bottom: 5px;

}