How to use Google fonts | Html

 <head>
  <link rel="stylesheet" type="text/css" href="http://fonts.googleapis.com/css?family=Droid+Serif">
</head> 

AI Explanation

This code is linking an external stylesheet to the HTML document. It is using a link tag within the head section of the document to connect to a Google Fonts stylesheet. The href attribute specifies the URL of the external stylesheet which contains font styles for 'Droid Serif'. By including this link in the HTML document, it allows the browser to fetch and apply the specified font styles to the content of the page.