The fonts (typeface) listed below are a "safe" choice for determining which font to use for your website. The aforementioned fonts are present on "virtually" all systems, so the formatting in terms of text will appear virtually as you formatted it on any system. The "safe" fonts are :
Arial
Arial Black
Comic sans MS
Courier New
Georgia
Impact
Times New Roman
Trebuchet MS
Verdana
More fonts possible in CSS3
The CSS3 specification again includes the @font-face rule. This allows CSS3 supporting browsers such as the Firefox (as of version 3.5), Safari (as of version 3.1) and Opera (as of version 10) to embed fonts
More see: http://www.w3schools.com/css/css3_fonts.asp
Color code overview