Internal CSS

Internal CSS ~10 mins

CSS enclosed in <style></style> tags within an HTML document functions like an external stylesheet, except that it lives in the HTML document it styles instead of in a separate file, and therefore can only be applied to the document in which it lives.

 <head>
 <style>
        h1 {
            color: green;           
        }       
 </style>
 </head>
 <body>
    <h1>Hello world!</h1>
 </body>