You can change this::
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, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend, table, caption, tbody, tfoot, thead, tr, th, td {addons.css (line 18)
background: none repeat scroll 0 0 transparent;
border: 0 none;
font-size: 100%;
margin: 0;
outline: 0 none;
padding: 0;
}
to
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, b, u, i, center, dl, dt, dd, ol, ul, li, fieldset, form, label, legend{addons.css (line 18)
background: none repeat scroll 0 0 transparent;
border: 0 none;
font-size: 100%;
margin: 0;
outline: 0 none;
padding: 0;
}
Css file reference :: plugin/system/jat3/base-themes/default/css/addons.css