#waterfull{
	position: relative;
	left: 0;
	top:100px;
  opacity: 0;
}
.waterfull .item{
	float: left;
	padding: 5px;
	background: #ffffff;
	border-radius: 10px;
	position: absolute;
	overflow: hidden;
}
.waterfull .item:hover {
  box-shadow: 5px 5px 10px #ddd;
}
.waterfull .item video{
	width: 290px;
	border-radius: 10px;
}
.waterfull .item .info{
	padding: 5px;
	text-align: center;
}
.waterfull .item .title{
	padding: 5px;
}

.waterfull .item .info {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5px 10px;
  box-sizing: border-box;
  color: #444444;
}

.waterfull .item .info .tit {
	height: 20px;
	line-height: 20px;
  color: #444;
  font-size:14px;
}

.waterfull .item .info .module_size {
	height: 20px;
	line-height: 20px;
  color: #444;
  font-size:12px;
  margin-top:5px;
}


.waterfull .item .btn_box {
  visibility: hidden;
  position: absolute;
  height: 100%;
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: rgb(0 0 0 / 0);
  transition: background-color 160ms ease-out;
  top:0px;
  left:0px;
}
.waterfull .item:hover .btn_box {
  visibility: visible;
  background-color: rgb(0 0 0 / 50%);
}
.waterfull .item .btn {
  width: 110px;
  height: 36px;
  margin:0 5px;
  line-height: 36px;
  border: 1px solid #c5c5c5;
  border-radius: 20px;
  background: #ffffff;
  text-align: center;
  padding:0px;
  color:#444;
}

.waterfull .item .go_preview {
  border: 1px solid #7a929e;
  background: #7a929e;
  color: #fff;
}

.waterfull .item .set_edit {
  border: 1px solid #ff5947;
  background: #ff5947;
  color: #fff;
}

#sidebar-menu ul ul li.active a{
  color: rgba(15, 31, 62, 0.8);
  font-weight: normal;
}