OK (Bugs)
Okay I figured out following way:
by changing the font size in following parts, then I can get the Titles displayed in larger fonts:
#content { margin:0; padding:20px; min-height:200px; background:#fff; }
#content p { font-size:1.05em; line-height:1.45em; max-width:60em; }
#content ul { font-size:0.85em; line-height:1.45em; max-width:60em; }
#content li,
#content ul ul { font-size:1em; }
Not sure if you have better ways.
Regards,