html, body									{ width: 100%; margin: 0; padding: 0; font-family: Arial, Tahoma, Verdana; text-align: center; }

div										{ box-sizing: border-box; overflow: hidden; }

#mainWrapper									{ width: 100%; max-width: 920px; margin: auto; padding: 20px; }

#headerContainer		div						{ margin-top: 20px; font-size: 12px; }
#headerContainer		h3						{ margin: 0; font-size: 40px; }
#headerContainer		hr						{ height: 1px; margin: 10px 0px 10px 0px; border: 0; background-color: #d0d0d0; }

#previewsContainer		div						{ float: left; width: 23.5%; margin: 20px 1% 0px 1%; }
#previewsContainer		div				img		{ display: block; width: 100%; }
#previewsContainer		div:nth-of-type(4n+1)				{ margin-left: 0px; }
#previewsContainer		div:nth-of-type(4n+4)				{ margin-right: 0px; }

#footerContainer		hr						{ height: 1px; margin: 30px 0px 10px 0px; border: 0; background-color: #d0d0d0; }
#footerContainer		div						{ font-size: 12px; }