this page is mainly used on mobile phones. There is always a white area below. Why can"t you go to it? what is the reason?
html part
<body>
<div class="wrap">
<img src="img/background.gif" alt="" />
<div class="btn">
<a href="">
<img class="download" src="img/download.png" alt="" />
</a>
</div>
</div>
</body>css part
*{padding:0;margin:0}
img{
vertical-align: middle;
}
body{
position:relative;
}
.wrap{
height:100%;
min-width:320px;
max-width:640px;
margin:0 auto;
}
img{
width:100%;
height:100%;
}
.btn{
width:40%;
position:absolute;
left:30%;
bottom:3%;
}