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<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <style> * {box-sizing: border-box;} .container { position: relative; width: 50%; max-width: 300px; } .image { display: block; width: 100%; height: auto; } .overlay { position: absolute; bottom: 0; background: rgb(0, 0, 0); background: rgba(0, 0, 0, 0.5); /* Black see-through */ color: #f1f1f1; width: 100%; transition: .5s ease; opacity:0; color: white; font-size: 20px; padding: 20px; text-align: center; } .container:hover .overlay { opacity: 1; } </style> </head> <body> <h2>标题覆盖层叠加图像</h2> <p>请将鼠标悬停在图片上查看效果。</p> <div class="container"> <img src="/i/pic/avatar-1.png" alt="Avatar" class="image"> <div class="overlay">My Name is John</div> </div> </body> </html>