/* mobile dev */
@media only screen and (max-device-width: 480px){

	body>div{
		width:100%;
	}
	h1,footer{
		display: none;
	}
	header{
		margin: 0.5em auto 3em;
	}
	section{
		margin: 2em auto 6em;
	}
	nav{
		position: relative;
	}
	nav > a.sec > li {
		font-size: 0.7em;
	}
}