*{margin:0;padding:0;box-sizing:border-box;}
fieldset,img{border:0}
img{vertical-align:middle;}

footer,header,section{display:block}
html{font-size:183%}
body{margin:0 auto;max-width:640px;min-width:320px;width:100%;background:#12101e url(bg.png) no-repeat center top;background-size:cover;height:100%;line-height:1.5;}

a{-webkit-tap-highlight-color:transparent;-webkit-tap-highlight-color:transparent;text-decoration:none;color:#232323;}
a:hover,a:active{-webkit-tap-highlight-color:transparent;-webkit-tap-highlight-color:transparent;text-decoration:none}
:focus{outline:0 none}

			
a{display: block;position: absolute;width: 45%;height: 7%;transform: translate(-50%,-50%);background-size: 100% 100%;background-repeat: no-repeat;}
.background{
				background-image: url(bg.png);
				background-size: 100% 100%;
				background-repeat: no-repeat;
			}
.iphone{left: 50%;top:25%;background-image:url(btn1.png);}
.android{left: 50%;top:33%;background-image: url(btn2.png);}