html,body,div,span,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,abbr,address,cite,code,del,dfn,em,img,ins,kbd,q,samp,small,strong,sub,sup,var,b,i,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,caption,tbody,tfoot,thead,tr,th,td,article,aside,canvas,details,figcaption,figure,footer,header,hgroup,nav,section,summary,time,mark,audio,video { /* removed center, font, applet, big, s, u, tt, strike, menu & acronym as they are depreciated in html5 */
	margin:0;
	padding:0;
	border:0;
	outline:0;
	font-size:100%;
	vertical-align:baseline;
	background:transparent;
	font-weight:normal
}
ol, ul, nav ul {
	list-style:none
}
blockquote, q {
	quotes:none
}
blockquote:before, blockquote:after, q:before, q:after {
	content:'';
	content:none
}
ins {
	text-decoration:none
}
del {
	text-decoration:line-through
}
table {
	border-collapse:collapse;
	border-spacing:0
}
article, aside, canvas, details, figcaption, figure, footer, header, hgroup, menu, nav, section, summary {
	display:block /*html5 elements */
}
input, select {
	vertical-align:middle
}
abbr[title], dfn[title] {
	border-bottom:1px dotted #000;
	cursor:help
}
hr {
	height:1px;
	border:0;
	border-top:1px solid #cccccc;
	margin:1em 0;
	padding:0
}
input[type='submit'],input[type='button'],input[type='text'],input[type='tel'],input[type='email'],input[type='url'] {
	font:inherit
}
button::-moz-focus-inner, input::-moz-focus-inner {
	border:0 /*remove dotted outline in Firefox on buttons and input buttons */
}

http://snipplr.com/view/39056

Removed depreciated elements, added Firefox button dotted line removal and fixed a few other styling issues. Compressed version in the link above.

HTML5 CSS Reset Uncompressed

html5

CSS