*{
	margin: 0;
	padding: 0;
}

#web_bg{
	  position:fixed;
	  top: 0;
	  left: 0;
	  width:100%;
	  height:100%;
	  min-width: 1000px;
	  z-index:-10;
	  zoom: 1;
	  background-color: #fff;
	  background-repeat: no-repeat;
	  background-size: cover;
	  -webkit-background-size: cover;
	  -o-background-size: cover;
	  background-position: center 0;
	}

	.button{
		
		    background-color: #549FFA;
		    border-radius: 50px;
		    margin-top: 78vh;
		    text-align: center;
		    line-height: .45rem;
		    color: #F6FFFC;
		    font-size: 48px;
		    padding: 3.5%;
		    width: 54%;
		    width: 59%;
		    left: 16vw;
		   position: fixed;
		
	}
	.button img{
		width: 2.3vh;
	}
	.down-bot-title {
        color: #999999;
	    font-size: 34px;
	    margin-top: 87vh;
	    left: 23vw;
	    position: fixed;
}