Hi Arif,

I' am using this technique as well. Leaving the tables alone works for me quite well on admin controls:

html, body, div, span,
applet, object, iframe,
h1, h2, h3, h4, h5, h6, p, blockquote, pre,
a, abbr, acronym, address, big, cite, code,
del, dfn, em, font, img, ins, kbd, q, s, samp,
small, strike, strong, sub, sup, tt, var,
dd, dl, dt, li, ol, ul,
fieldset, form, label, legend /*, Commented out because of DNN 
table, caption, tbody, tfoot, thead, tr, th, td */{
	margin: 0;
	padding: 0;
	border: 0;
	font-family: inherit ;
	text-align: left;
	/*vertical-align: baseline; */
    font-family: Arial, Helvetica, sans-serif;
    font-size: 12px;

}