I've found this answer over here on stackoverflow which works perfectly for me:
use this in style
body {
overflow-x: hidden;
width: 100%;
}
Use this in head tag
<meta name="viewport" content="user-scalable=no, width=device-width, initial-scale=1.0" />
<meta name="apple-mobile-web-app-capable" content="yes" />
A slight addition of mine in case your body has padding (to prevent the device from scaling to the body content-box, and thus still adding a horizontal scrollbar):
body {
overflow-x: hidden;
width: 100%;
-webkit-box-sizing: border-box;
-moz-box-sizing: border-box;
box-sizing: border-box;
}