HTML <big> tag (Not supported in HTML5)

HTML <big> tag was used to increase the text font size one level bigger than the document’s base font size or surrounding text size, such as small to medium, medium to large, etc.

Syntax:

<big>Content... </big>

Following are some specifications about the <big> tag

Display	Inline
Start tag/End tag	Both start and End tag
Usage	Fonts and Web Typography

Example:

 <!DOCTYPE html>  
 <html>  
 <head>  
   <title>Big tag</title>  
 </head>  
 <body>  
   <h2>Example of HTML big tag</h2>  
    <p style="color:#ff4040">This is paragraph with normal font size</p>  
    <p style="color:#00bfff">  
        <big>This is paragraph with font size greater than the previous content</big>  
    </p>  
  </body>  
</html>

Output:

Increasing Font-size using CSS property:

<!DOCTYPE html>  
<html>  
<head>  
    <style>  
          .fsize{  
        font-size: 18px;  
        color: red;  
        }  
    </style>  
</head>  
<body>  
    <h2>Example to change font size using CSS</h2>  
    <p>The paragraph content with default font size</p>  
    <p class="fsize">The paragraph content with CSS to increase font size</p>  
</body>  
</html>