* { box-sizing: border-box; }
html, body, div, span, iframe, h2, h3, h4, h5, h6, pre,
a, img, sub, sup, b, u, i, dl, dt, dd, ol, ul, menu, li,
fieldset, form, label, legend, table, caption, thead, tbody, 
tfoot, tr, th, td, article, aside, 
figure, figcaption, footer, header, nav, section, summary {
	margin: 0;
	padding: 0;
	border: 0;
}
ul, menu { list-style: none; }
a { text-decoration: none; color: inherit; }
img { max-width: 100%; }