过渡没有实现效果

.cr-container>input.selectior-img-1:checked ~ .cr-bgimg>div>span:nth-child(1),

.cr-container>input.selectior-img-2:checked ~ .cr-bgimg>div>span:nth-child(2),

.cr-container>input.selectior-img-3:checked ~ .cr-bgimg>div>span:nth-child(3),

.cr-container>input.selectior-img-4:checked ~ .cr-bgimg>div>span:nth-child(4){

    z-index:10;

    left:0;

}

input框类名写错了

section,header{
	display: block;
}
@font-face {
	font-family:"BebasNeue";
	src: url("fonts/BebasNeue-webfont.eot");
	src: url("fonts/BebasNeue-webfont.woff") format("woff"),
		 url("fonts/BebasNeue-webfont.ttf") format("truetype"),
		 url("fonts/BebasNeue-webfont.woff") format("woff"),
		 url("fonts/BebasNeue-webfont.svg") format("svg");
	font-weight:normal;
	font-style: normal;
}
body{
	background:url(../img/bg.jpg);
	font-family:Cambria,Palatino,"palatino linotype","Palatino LT STD",General,serif;
	font-size:15px;
	color: #3a2127;
	font-weight: 400;
	overflow-y:scroll;
}
a{
	text-decoration: none;
	color: #333;
}
.clr{
	width: 0;
	height: 0;
	overflow: hidden;
	clear: both;
}
.container{
	width: 100%;
	height: 100%;
	text-align: center;
	position: relative;
}
.container>header{
	padding: 20px 30px 10px 30px;
	margin: 0px 20px 10px 20px;
	text-shadow: 1px 1px 1px rgba(0,0,0,0.2);
}
.container>header>h1{
	font-size: 35px;
	line-height: 35px;
	font-weight: 400;
	color: rgba(26,89,120,0.9);
	padding-bottom: 5px;
	text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
	font-family: "BebasNeue";
}
.container>header>h1>span{
	color: #7cbcd6;
	text-shadow: 0 1px 1px rgba(255,255,255,0.8);
}
.codrops-demos{
	padding: 14px;
}
.codrops-demos a{
	display: inline-block;
	width: 60px;
	height: 60px;
	text-align: center;
	line-height: 60px;
	background:rgba(104,171,194,0.5);
	border-radius:50%;
	font-weight:800;
	font-size: 11px;
	font-style: initial;
	color: #fff;
	margin: 0 3px;
	text-shadow: 1px 1px 1px rgba(0,0,0,0.1);
	box-shadow: 1px 1px 1px rgba(0,0,0,0.05) inset;
}
.codrops-demos a.current-demo,
.codrops-demos a.current-demo:hover{
	background: rgba(255,255,255,0.9);
	color: rgba(104,171,191,1);
	box-shadow: 0px 1px 1px rgba(0,0,0,0.2);
}
.codrops-demos a:hover{
	background: #4fa2c4;
}
.cr-container{
	width: 600px;
	height: 400px;
	margin: 0 auto;
	position: relative;
	border: 20px #fff solid;
}
.cr-container>input{
	display: none;
}
.cr-container>label{/*lable内联元素*/
	font-size:initial;
	width: 150px;
	height: 30px;
	cursor: pointer;
	color: #fff;
	font-size: 24px;
	text-align: center;
	line-height: 32px;
	margin-top: 350px;
	float: left;
	position: relative;
	z-index: 1000;
}
.cr-container>label:before{
	content: "";
	width: 34px;
	height: 34px;
	border-radius:50%;
	background: rgba(130,195,217,0.9);
	position: absolute;
	left: 50%;
	margin-left:-17px;
	z-index: -1;
	box-shadow: 0 0 0 4px rgba(255,255,255,0.3);
}
.cr-container>input:checked+label{
	color: #68ab32;
}
.cr-container>input:checked+label:before{
	background: #fff;
	box-shadow: 0 0 0 4px rgba(104,171,194,0.5);
}
.cr-container>label:after{
	content: "";
	width: 1px;
	height: 400px;
	position: absolute;
	right: 0;
	bottom: -20px;
	background: -webkit-gradient(linear,left top,left bottom,color-stop(0%,rgba(255,255,255,0)),color-stop(100%,rgba(255,255,255,1)));
	background: -moz-linear-gradient(top,rgba(255,255,255,0) 0%,rgba(255,255,255,1)100%);
	background: -ms-linear-gradient(top,rgba(255,255,255,0) 0%,rgba(255,255,255,1)100%);
	background: -o-linear-gradient(top,rgba(255,255,255,0) 0%,rgba(255,255,255,1)100%);
	filter: progid:DXImageTransform.Microsoft.gradient(startColortstr="#00fffff",endColorstr="ffffff",GradientType=0);
}
.cr-container>label:last-child:after{
	width: 0;
}
.cr-bgimg{
	width: 600px;
	height: 400px;
	position: absolute;
	left: 0;
	top: 0;
	z-index: 1;
	background-repeat:no-repeat;
}
.cr-bgimg>div{
	width: 150px;
	height: 100%;
	float: left;
	overflow: hidden;
	position: relative;
}