CSS3D creates a stereoscopic 3D effect withCSS3 only. First I just created this red and cyan effect because I thought it looks cool. But then I got some 3D glasses and was shocked that it actually works. Basically you just need one line of CSS. A text-shadow with a red and cyan offset. The trick is to use “em“s for the text-shadows. That way, if you change the font-size, the text-shadows change in the same proportion.