W3School TIY Editor
W3School 在线教程
改变方向
暗黑模式
运行代码
<!DOCTYPE html> <html> <body> <h1 style="background-color:#404040;">#404040</h1> <h1 style="background-color:#686868;">#686868</h1> <h1 style="background-color:#a0a0a0;">#a0a0a0</h1> <h1 style="background-color:#bebebe;">#bebebe</h1> <h1 style="background-color:#dcdcdc;">#dcdcdc</h1> <h1 style="background-color:#f8f8f8;">#f8f8f8</h1> </body> </html>