p { font-size: 15px; } p { font-size: large; } p { font-size: 150%; }
<!DOCTYPE html> <html> <head> <title>HTMLFont size</title> </head> <body> <h1 style="color:red;font-size:40px;">Heading</h1> <p style="color:blue;font-size:18px;">This is demo text</p> </body> </html>