Run
Tutorial With Example
Run your live code
<!DOCTYPE html> <html> <head> <title>CSS background-color</title> <style> div { background: rgba(0, 128, 0, 0.9) /* Green background with 30% opacity */ } </style> </head> <body> <div style="height:100px; padding:10px"> <h1>Welcome to CSS Tutorial</h1> <p>I am a CSS Developer!</p> </div> </body> </html>