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<!DOCTYPE html> <html> <head> <style> div.background { background: lightblue url(/i/photo/wuhan.jpg) no-repeat center; background-size: cover; align-items: center; display: flex; justify-content: center; height: 400px; width: 400px; } div.transbox { background-color: rgba(255, 255, 255, 0.4); -webkit-backdrop-filter: blur(5px); backdrop-filter: blur(5px); padding: 20px; margin: 30px; font-weight: bold; } </style> </head> <body> <h1>backdrop-filter 属性</h1> <div class="background"> <div class="transbox"> <p>backdrop-filter: blur(5px)</p> </div> </div> </body> </html>