<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>CSS RGBA Color Values</title> <style> h1 { color: rgba(0,0,255,0.5); } p { background-color: rgba(0%,0%,100%,0.3); } </style> </head> <body> <h1>This is a frist paragraph.</h1> <p>This is a second paragraph.</p> </body> </html>