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<!DOCTYPE html> <html> <head> <style> #example1 { border: 10px dashed black; padding: 25px; background: url(img_tree.gif), url(paper.gif); background-repeat: no-repeat; background-origin: content-box, padding-box; } #example2 { border: 10px dashed black; padding: 25px; background: url(img_tree.gif), url(paper.gif); background-repeat: no-repeat; background-origin: content-box, border-box; } #example3 { border: 10px dashed black; padding: 25px; background: url(img_tree.gif), url(paper.gif); background-repeat: no-repeat; background-origin: content-box, content-box; } </style> </head> <body> <h2>background-origin: content-box, padding-box:</h2> <div id="example1"> <h2>Hello World</h2> <p>“paper.gif”背景图像从填充边缘的左上角开始。</p> <p>“img_tree.gif”背景图片从内容的左上角开始。</p> </div> <h2>background-origin: content-box, border-box:</h2> <div id="example2"> <h2>Hello World</h2> <p>“paper.gif”背景图片从边框的左上角开始。</p> <p>“img_tree.gif”背景图片从内容的左上角开始。</p> </div> <h2>background-origin: content-box, content-box:</h2> <div id="example3"> <h2>Hello World</h2> <p>两个背景图像都从内容的左上角开始。</p> </div> </body> </html>