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<!DOCTYPE html> <html> <head> <style> .grid-container { display: grid; grid-template-columns: auto auto auto; background-color: #2196F3; padding: 10px; } .grid-item { background-color: rgba(255, 255, 255, 0.8); border: 1px solid rgba(0, 0, 0, 0.8); padding: 20px; font-size: 30px; text-align: center; } </style> </head> <body> <h1>网格元素</h1> <p>网格布局必须有一个父元素，其<em>display</em> 属性设置为<em>网格</em> 或<em>inline-grid</em>。</p> <p>网格容器的直接子元素自动成为网格项。</p> <div class="grid-container"> <div class="grid-item">1</div> <div class="grid-item">2</div> <div class="grid-item">3</div> <div class="grid-item">4</div> <div class="grid-item">5</div> <div class="grid-item">6</div> <div class="grid-item">7</div> <div class="grid-item">8</div> <div class="grid-item">9</div> </div> </body> </html>