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Tryit: HTML
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Change Theme, Dark/Light
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <style> body { background-color: lightgreen; } @media only screen and (orientation: landscape) { body { background-color: lightblue; } } </style> </head> <body> <p>调整浏览器窗口的大小。 当本文档的宽度大于高度时，背景色为“浅蓝色”，否则为“浅绿色”。</p> </body> </html>