实例代码“Ctrl+/”提示“F11/ESC”全屏 返回 格式化 恢复 运行
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<!DOCTYPE html>
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<html>
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<head>
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<style>
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p
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{
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border:5px solid red;
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}
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</style>
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</head>
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​
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<body>
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<p>This is some text in a paragraph.</p>
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</body>
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</html>
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