.footer{
	background-color: #FFF;
	width: 100%;
	height: 4em;
	position: fixed;
    left: 0;
    bottom: 0;
    z-index: 1000;
	
	padding-top: 0.5em;
}
.footerbtn{
	width: 20%;
	float: left;
	text-align: center;
	color:#cdcdcd;
}
.set{
	color: #3b81ff;
}