html,body{
	margin: 0;
	padding:0;
}
body{
	width:100%;
	max-width: 640px;
	min-width: 320px;
	margin: 0 auto;
}
@media screen and (min-width:320px) and (max-width:350px) {
    .txt{
        font-size: 15px !important;
    }
}
@media screen and (min-width:350px) and (max-width:480px) {
    .txt{
        font-size: 16px !important;
    }
}

@media screen and (min-width:480px) and (max-width:640px) {
    .txt{
        font-size: 18px !important;
    }
}
.head{
	position: relative;
	width:100%;
}
.banner img,.head img{
	display: block;
	line-height: 0;
	border: none;
	width:100%;
}
.banner{
	position: relative;
}
.btn{
	width:48%;
	position: absolute;
	bottom: 7%;
	left:50%;
	margin-left: -24%;
}
.txt{
	position: absolute;
	top: 94%;
	width:100%;
	color:#fcd865;
	font-family: "microsoft yahei";
	font-size: 15px;
	text-align: center;
}
.Img{
	width:90%;
	position: absolute;
	top:18%;
	left:50%;
	margin-left: -45%;
}
.banner .top1{
	top:20%;
}
.banner .top2{
	top:13%;
}
.footBtn{
	width:48%;
	position: absolute;
	bottom: 7%;
	left:50%;
	margin-left: -24%;
}
.top {
            position: fixed;
            top: 0px;
            width: 100%;
        }