add stylesheet to html
<!-- Linking External Style Sheets --> <head> <link rel="stylesheet" href="css/style.css" /> </head> <!-- Embedded Style Sheets --> <head> <style> body { background-color: YellowGreen; } h1 { color: blue; } p { color: red; } </style> </head> <!-- Inline Styles --> <h1 style="color: red; font-size: 30px">This is a heading</h1> <p style="color: green; font-size: 18px">This is a paragraph.</p> <div style="color: green; font-size: 18px">This is some text.</div>