The author created a font with each icon as a glyph (letter) in that font. Modern web browsers can load a font file referenced by URL in the stylesheet, which i

The author created a font with each icon as a glyph (letter) in that font. Modern web browsers can load a font file referenced by URL in the stylesheet, which is what he's done. It won't work in older browsers. https://github.com/samcollins/css-social-buttons/blob/master/type/zocial-regular-webfont.svg https://github.com/samcollins/css-social-buttons/blob/master...