CSS snippet for diagnostics to find empty elements etc.
/* Empty Elements */div:empty, span:empty, li:empty, p:empty, td:empty, th:empty {
padding: 20px;
border: 5px dotted yellow !important;
}
/* Empty Attributes */*[alt=""], *[title=""], *[class=""], *[id=""], a[href=""], a[href="#"] {
border: 5px solid yellow !important;
}
/* Deprecated Elements */applet, basefont, center, dir, font, isindex, menu, s, strike, u {
border: 5px dotted red !important;
}
/* Deprecated Attributes */*[background], *[bgcolor], *[clear], *[color], *[compact], *[noshade], *[nowrap], *[size], *[start],*[bottommargin], *[leftmargin], *[rightmargin], *[topmargin], *[marginheight], *[marginwidth], *[alink], *[link], *[text], *[vlink],*[align], *[valign],*[hspace], *[vspace],*[height], *[width],ul[type], ol[type], li[type] {
border: 5px solid red !important;
}
/* Proposed Deprecated Elements */input[type="button"], big, tt {
border: 5px dotted #33FF00 !important;
}
/* Proposed Deprecated Attributes */*[border], a[target], table[cellpadding], table[cellspacing], *[name] {
border: 5px solid #33FF00 !important;
}