<!DOCTYPE html> <html> <head> <style> img { position: absolute; left: 0px; top: 0px; z-index: -1; } </style> </head> <body> <h1>这是标题</h1> <img src="/logo.png" width="188" height="267"> <p>由于图像的 z-index 为 -1,它将被置于文本之后。</p> </body> </html>