.slider_box{
	width: 1200px;
	height:510px;
	margin: 0 auto;
	font-size: 14px;
	padding-top:40px;
}
.video_more_btn{
	width:100%;
	height:32px;
	padding:0 0 15px 0;
}
.video_more_btn a{
	display:block;
	text-align:center;
	background-color:#e94c3d;
	float:right;
	color:#fff;
	width: 120px;
    height: 32px;
	line-height:32px;
    font-size: 16px;
}
.slider-container {
  position: relative;
  overflow: hidden;
  width: 910px;
  float:left;
  height: 510px;
  background-color: #444;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none; 
}
.slider {
  position: relative;
  width: 9999px;
}
.slider:before,
.slider:after {
  display: table;
  content: ' ';
}
.slider:after {
  clear: both;
}
.slider__item {
  position: relative;
  float: left;
  margin: 0;
  padding: 0;
  /* height: auto; */
}
.slider__item video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: contain;
}
.slider__item video:focus{
      outline: -webkit-focus-ring-color auto 0; 
 } /* 去除video获得焦点的边框 */ 
.slider__switch span {
  color: #fff;
  display: block;
  width: 32px;
  height: 32px;
}
/* Arrows */
.slider__switch {
  position: absolute;
  top: 50%;
  margin-top: -20px;
  padding: 10px 5px;
  cursor: pointer;
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
       -o-user-select: none;
          user-select: none;
  border-radius: 1px;
  background: #000;
  opacity: .3;
  transition: opacity .15s ease;
  fill: #fff;
}
.slider__switch--prev {
  left: 10px;
}
.slider__switch--next {
  right: 10px;
}

.slider__switch:hover {
  opacity: .85;
}
.slider__switch[disabled] {
  visibility: hidden;
  opacity: 0;
}
.preview {
	float:right;
	width:290px;
	height:510px;
	text-align:right;
}
.preview a {
	display: inline-block;
	margin:0 0 28px 0;
	width: 270px;
	height:151px;
}
.preview .preview_img {
	width: 270px;
	height:151px;
}
.preview_imgbox{
	position:relative;
	width: 270px;
	height:151px;
}
.preview_start{
	position:absolute;
	top:55px;
	left:103px;
	width:50px;
	height:50px;
}
.preview_title{
	width:270px;
	height:40px;
	line-height:40px;
	overflow:hidden;
	position:absolute;
	bottom:0;
	background-color:rgba(0,0,0,0.5);
	text-align:left!important;
}
.preview_title p{
	color:#fff;
	padding:0 10px;
}
.active_tab {
	box-shadow: 2px 2px 10px 4px rgba(0,0,0,.5);
}

.slider.has-touch {
  cursor: move;
  cursor: -webkit-grabbing;
  cursor:    -moz-grabbing;
}
.box7_img {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -30px;
    margin-left: -30px;
    width: 64px;
    height: 64px;
    z-index: 10;
}
.box7_d {
    position: absolute;
    top: 0;
    z-index: 9;
}
.box7_d img {
    width: 100%;
    height: 446px;
}