效果图
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<head><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"><title>黑客帝国电子表</title><style>body {margin: 0;padding: 0;background-color: black;overflow: hidden;font-family: 'Courier New', monospace;}#matrix {position: fixed;top: 0;left: 0;width: 100%;height: 100%;z-index: 1;}.clock-container {position: absolute;top: 50%;left: 50%;transform: translate(-50%, -50%);z-index: 2;text-align: center;width: 100%;}.time {color: #00ff41;font-size: 6rem;font-weight: bold;text-shadow: 0 0 10px #00ff41;margin-bottom: 20px;letter-spacing: 5px;}
