body {
    background-image: url("/files-static/images/photo_plant_sun.jpg");
    background-attachment: fixed;
    background-repeat: no-repeat;
    background-size: contain;
}

#center {
	margin-left: auto;
}

@media only screen and (min-width: 640px) {
    #center {
        max-width: 1000px;
    }
}

@media only screen and (min-width: 1920px) {
	#center {
    	margin-left: auto !important;
    	margin-right: auto !important;
    	max-width: 1024px;
    	padding: 1em;
    }
}