* {
  padding: 0;
  margin: 0;
  box-sizing: border-box;
  list-style: none;
}
a {
  text-decoration: none;
}
.video_box {

  box-sizing: content-box;
  position: relative;
  width: 790px;
  height: 400px;
 
}
.video_box .video_title {
  height: 50px;
  color: white;
}
.video_title h2 {
  font-weight: 400;
  text-decoration: underline;
}
.video_box video {
  cursor: pointer;
  width:100%;
  height: 445px;  
}
.video{

  cursor: pointer;
 
  height: 400px;
}

/* 全屏后隐藏控件 */
video::-webkit-media-controls {
  display: none !important;
}
.controls {
  position: absolute; display:none;
  bottom: 0;
  width: 100%;
  height: 40px;
  background-color: rgba(58, 59, 76, .8);
  line-height: 40px;
  padding-left: 5px;
}
.controls a {
  color: white;
}
.switch{
  display: block;
  float: left;
  width: 30px;
  height: 30px;
  margin-right: 10px;
  font-size: 20px;
}
.play {
  display: block;
  width: 100px;
  height: 100px;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  margin: auto; background:url(../images/bf.png) left center no-repeat;
}
.controls .enlarge {
  float: right;
  font-size: 40px;
  opacity: 0.5;
}
.enlarge:hover {
  opacity: 1;
}
.time {
  float: left;
  position: relative;
  width: 60%;
  height: 40px;
}
.progress {
  float: left;
  width: calc(100% - 100px);
  height: 6px;
  margin-top: 17px;
  margin-right: 10px;
  border-radius: 3px;
  background-color: #333333;
  cursor: pointer;
}
.playprogress {
  width: 0;
  height: 100%;
  background: #00a1d6;
  border-radius: 3px;
  cursor: pointer;
}
.slider {
  display: none;
  float: right;
  width: 12px;
  height: 12px;
  margin-top: -3px;
  margin-right: -6px;
  border-radius: 50%;
  border: 3px solid #fff;
  background-color: #00a1d6;
}
.timedisplay {
  float: left;
  width: 90px;
  font-size: 14px;
  color: white;
}
.volume {
  float: left;
  width: 150px;
}
.volume a {
  font-size: 25px;
}
.volume input {
  width: 100px;
  margin-left: 5px;
  margin-top: -10px;
  height: 5px;
  vertical-align: middle;
}
.speed {
  position: relative;
  float: left;
  cursor: pointer;
  color: #fff;
  width: 60px;
  height: 40px;
  font-weight: 600;
  font-size: 14px;
  text-align: center;
  line-height: 40px;
}

.speed ul {
  display: none;
  position: absolute;
  top: -150px;
}

.speed ul li {
  width: 60px;
  height: 25px;
  background-color: rgba(58, 59, 76, .8);
  line-height: 25px;
}

.speed ul li:hover {
  background: rgba(43, 43, 43, .8);
  color: aquamarine;
}