@media screen and (max-width: 570px) {
	html {
		height:100%;
	    background: url(background-image.jpg) no-repeat center center fixed;
	    -webkit-background-size: cover;
	    -moz-background-size: cover;
	    -o-background-size: cover;
	    background-size: cover;
	}

	body {
		font-size: 12px;
	}

	.container {
		width: 350px;
		height: 350px;
		border-radius: 350px;
	}

	.main {
		margin-top: 87.5px;
	}
}