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<!DOCTYPE html> <html> <style> div {height:50px;width:100%;} </style> <body> <h1>Colors can be set using RGB values</h1> <div style="background-color:rgb(255,0,0)"></div> <div style="background-color:rgb(255,255,0)"></div> <div style="background-color:rgb(0,255,0)"></div> <div style="background-color:rgb(0,255,255)"></div> <div style="background-color:rgb(0,0,255)"></div> <h1 style="color:rgb(255,0,0)">标题</h1> <h1 style="color:rgb(255,255,0)">标题</h1> <h1 style="color:rgb(0,255,0)">标题</h1> <h1 style="color:rgb(0,255,255)">标题</h1> <h1 style="color:rgb(0,0,255)">标题</h1> </body> </html>