*{
	margin:?0;
	padding:?0;
	border:?none;
	font-size:?1.5625vw;
	font-family:?"Microsoft?Yahei";
}
html,
body{
	height:100%;
}

/*music*/
#music{
	position:?fixed;
	top:3vh;
	right:4vw;
	width:?15vw;
	z-index:5;
	height:15vw;
	border:?4px?solid?#ef1639;
	border-radius:?50%;
	background:?#fff;
}
#music>img:first-of-type?{
	position:?absolute;
	top:24%;
	right:2.5%;
	width:?28.421%;
}
#music>img:last-of-type?{
	position:?absolute;
	top:0;
	right:?0;
	bottom:?0;
	left:?0;
	margin:?auto;
	width:?79%;
}


/*page?bg*/
.page{
	height:?100%;
}
.page>.bg{
	height:100%;
	position:?absolute;
	width:100%;
	z-index:?-1;
}
/*page1*/
#page1>.bg{
	background:?url("images/p1_bg.jpg")?no-repeat?center?center;
	background-size:?100%;
}
/*page2*/
#page2>.bg{
	background:?url("images/p2_bg.jpg")?no-repeat?center?center;
	background-size:?100%;

}
/*page3*/
#page3>.bg{
	background:?url("images/p3_bg.jpg")?no-repeat?center?center;
	background-size:?100%;
}

相同的代碼，為什么顯示出來，下一張圖片會覆蓋上一張圖片？求解？？？？？？？？？？？？