#cans{
	position: relative;
	margin: 0 auto;
	margin-top: 0px;
	height: 470px;
	width: 1000px;
	/* width: 60vw; */
	background: black;
	border: 10px #fff solid;
}
#video{
	/*height: 80vh;*/
	height: 450px;
	width: 800px;
	float: left;
	background: black;
	position: relative;   /*去掉这句将会使得video优先级失效*/
	z-index: 99;
}

aside{
	float: left;
	height: 450px;
	width: 180px;
	background: black;
	opacity: 0.9;
	position: relative;
}
aside header h4{
	font-size: 26px;
	color: white;
	margin-bottom: 10px;
	margin-top: 15px;
	text-align: center;
}
aside ul{
	background: black;
	width: 180px;
	list-style: none;
	text-align: center;
}
aside ul li{
	color: white;
	font-size: 14px;
	line-height:30px ;
	cursor:pointer

}

aside ul li:hover{
	
	background-color: lightgray;
	color: lightcoral;
	font-weight: bold;
}

aside #playList-hidden {
	position: absolute;
	top: 200px;
	right: 0;
	width:20px ;
	height: 32px;
	background: lightgoldenrodyellow;
	font-size: 16px;
	font-weight: bold;
	border-top-left-radius:10px ;
	border-bottom-left-radius:10px ;
	opacity: 0.5;
	z-index: 10000;
}

#cans #playList-show1{
	margin-top: 200px;
	left: -150px;
	float: left;
	width:20px ;
	height: 32px;
	background:lightgoldenrodyellow;
	font-size: 16px;
	font-weight: bold;
	border-top-right-radius:10px ;
	border-bottom-right-radius:10px ;
	opacity: 1;
	visibility: hidden;
}

#cans #playList-show1:hover,aside #playList-hidden:hover{
	opacity: 0.7;
}
.select{
	color: lightcoral;
}

@media screen and (min-width: 960px) and (max-width: 1199px) { 
	#cans{width: 800px; height: 370px;}
	#video{width: 600px; height: 350px;}
	aside{width: 180px; height: 350px;}
	aside ul{width: 180px;}
	#cans #playList-show1{margin-top: 160px;}
	aside #playList-hidden{top: 160px;}
}

@media screen and (min-width: 768px) and (max-width: 959px) { 
	#cans{width: 600px; height: 370px;}
	#video{width: 400px; height: 350px;}
	aside{width: 180px; height: 350px;  margin-top: 0px;}
	aside ul{width: 180px;}
	#cans #playList-show1{margin-top: 160px;}
	aside #playList-hidden{top: 160px;}
}

@media only screen and (min-width: 480px) and (max-width: 767px){
	#cans{width: 400px; height: 270px;}
	#video{width: 200px; height: 250px;}
	aside{width: 180px; height: 250px;  margin-top: 0px;}
	aside ul{width: 180px;}
	#cans #playList-show1{margin-top: 160px;}
	aside #playList-hidden{top: 160px;}
}
@media only screen and (max-width: 479px) { 
	#cans{width: 380px; height: 270px;}
	#video{width: 360px; height: 250px;}
	aside{width: 180px; height: 250px;  margin-top: 0px; display: none;}
	aside ul{width: 180px;}
	#cans #playList-show1{margin-top: 160px;}
	aside #playList-hidden{top: 160px;}
}

/*aside #playList-show{
	position: absolute;
	bottom: 250px;
	left: 0;
	width:20px ;
	height: 32px;
	background: lightgoldenrodyellow;
	font-size: 16px;
	font-weight: bold;
	border-top-left-radius:10px ;
	border-bottom-left-radius:10px ;
	opacity: 0.5;
	z-index: 1000;/*这里是第一优先级，为什么没显示在视频上方
	transform:translateX(-20px) ;
	display: block;
}*/