Initially launched in 2010 as Google Web Fonts, Google Fonts is a collection of interactive application programming interfaces that allow users to use web fonts on their website. This service is hosted by Google, and all of the fonts and bandwidth is free.
Note: Google Fonts are used over the Internet and are not meant to be installed or used on your computer in anything other than your Internet browser.
How to implement a Google font
<link href='http://fonts.googleapis.com/css?family=Open+Sans' rel='stylesheet' type='text/css'>
Once this line has been added in your CSS styles, specify the "Open Sans" font in the font-family using a line similar to the example below.
font-family: 'Open Sans', sans-serif;