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<!DOCTYPE html> <html> <style> div {height:50px;width:100%;} </style> <body> <h1>可以使用十六进制值设置颜色</h1> <div style="background-color:#ff0000"></div> <div style="background-color:#ffff00"></div> <div style="background-color:#00ff00"></div> <div style="background-color:#00ffff"></div> <div style="background-color:#0000ff"></div> <h1 style="color:#ff0000">标题</h1> <h1 style="color:#ffff00">标题</h1> <h1 style="color:#00ff00">标题</h1> <h1 style="color:#00ffff">标题</h1> <h1 style="color:#0000ff">标题</h1> </body> </html>