Hello,

I don't think it's a very good decision to have the fonts that font-family has. The fonts being used right now are the following:

font-family: Helvetica, "Microsoft Yahei", Menlo, Monaco, Consolas, "Courier New", monospace;

Half those fonts are monospaced, and they look poorly if you don't have helvetica or yahei. I think it would be better to remove the monospaced fonts and change them for sans-serif ones.