.main-box{
	padding-bottom: 10px;
}
.top-banner{
	position: relative;
}
.top-banner img{
	width: 100%;
}
.top-banner .img2{
	display: none;
}
@media screen and (max-width: 375px){
	.top-banner .img1{
		display: none;
	}
	.top-banner .img2{
		display: block;
	}
}

.logo-box{
	position: relative;
	padding-left: 100px;
	background: url(../images/top-banner-logo.png) no-repeat left center;
	background-size: 80px;
	font-size: 18px;
	color: #000;
	line-height: 30px;
	white-space:nowrap; 
	width: 960px;
	margin: auto;
	margin-top: 20px;
}
@media screen and (max-width: 1100px){
	.logo-box{
		width: auto;
		margin: 0 16px;
		margin-top: 10px;
	}
}

@media screen and (min-width: 1200px) and (max-width: 1920px) {
	.logo-box{
		width: auto;
		margin: 0 22%;
		margin-top: 10px;
	}
}

.doc-box{
	width:55%;
	margin: auto;
    margin-bottom: 40px;
    margin-top: 20px;
    line-height: 35px;
    white-space:nowrap; 
}
.doc-box p{
	
}
.down-box{
    margin-top: 20px;
}
.down-box a{
	width: 56.28%;
	display: block;
	margin: 0 auto;
	font-size: 28px;
	background: #57b314;
	color: #fff;
	text-align: center;
	line-height: 50px;
	border-radius: 10px;
	letter-spacing: 2px;
	font-family: "黑体";
}
.down-box a.on{
	margin-top: 20px;
}

@media screen and (max-width: 450px){
  .logo-box{
  	padding-left:80px;
	background: url(../images/top-banner-logo.png) no-repeat left center;
	background-size:70px;
	line-height: 25px;
  }
}
@media screen and (max-width: 375px){
	.logo-box{
		background: url(../images/top-banner-logo.png) no-repeat left center;
		background-size:65px;
	  	font-size: 15px;
	  	margin-top: 15px;
	 }
	 .doc-box{
	 	margin-bottom: 20px;
	 }
	 .down-box a{
	 	font-size: 20px;
	 	line-height: 40px;
	 }

}