body, html { font-size: 100%; 	padding: 0; margin: 0;}

/* Reset */
/*
*,
*:after,
*:before {
	-webkit-box-sizing: border-box;
	-moz-box-sizing: border-box;
	box-sizing: border-box;
}*/

/* Clearfix hack by Nicolas Gallagher: http://nicolasgallagher.com/micro-clearfix-hack/ */
.clearfix:before,
.clearfix:after {
	content: " ";
	display: table;
}

.clearfix:after {
	clear: both;
}

/*nav*/
.demo a{color: #fff;text-decoration: none;}
.demo button{width:100%;height:100%;border:none;background:url(../images/icon/nav_btn_icon.png) center center no-repeat;background-size:20px auto;}
.demo{width:40px;height:40px;background:url(../images/jtc2.png) no-repeat center center;
border-radius:100%;-moz-border-radius:100%;-webkit-border-radius:100%;}
.demo a.current{background:#1d7db1;color: #fff; }

.center{text-align: center;}