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<!DOCTYPE html> <html> <head> <style> #example1 { border: 10px solid black; padding: 35px; background: url(/i/photo/flower.gif); background-repeat: no-repeat; } #example2 { border: 10px solid black; padding: 35px; background: url(/i/photo/flower.gif); background-repeat: no-repeat; background-origin: border-box; } #example3 { border: 10px solid black; padding: 35px; background: url(/i/photo/flower.gif); background-repeat: no-repeat; background-origin: content-box; } </style> </head> <body> <h1>background-origin 属性</h1> <p>未设置 background-origin (padding-box 为默认):</p> <div id="example1"> <h2>Welcome to Shanghai</h2> <p>Shanghai is one of the four direct-administered municipalities of the People's Republic of China. Welcome to Shanghai!</p> <p>The city is located on the southern estuary of the Yangtze, with the Huangpu River flowing through it.</p> </div> <p>background-origin: border-box:</p> <div id="example2"> <h2>Welcome to Shanghai</h2> <p>Shanghai is one of the four direct-administered municipalities of the People's Republic of China. Welcome to Shanghai!</p> <p>The city is located on the southern estuary of the Yangtze, with the Huangpu River flowing through it.</p> </div> <p>background-origin: content-box:</p> <div id="example3"> <h2>Welcome to Shanghai</h2> <p>Shanghai is one of the four direct-administered municipalities of the People's Republic of China. Welcome to Shanghai!</p> <p>The city is located on the southern estuary of the Yangtze, with the Huangpu River flowing through it.</p> </div> </body> </html>