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<!DOCTYPE html> <html> <head> <style> .item3 { grid-column: auto / span 2; } .grid-container { display: grid; grid-template-columns: auto auto auto; grid-template-rows: auto auto; grid-gap: 10px; background-color: #2196F3; padding: 10px; } .grid-container > div { background-color: rgba(255, 255, 255, 0.8); text-align: center; padding: 20px 0; font-size: 30px; } </style> </head> <body> <h1>grid-auto-flow 属性</h1> <p><em>grid-auto-flow</em> 属性控制如何将自动放置的项目插入到网格中。</p> <p>这个网格有三列和两行。</p> <p>“item3”跨越两列，其他项目将插入哪里？</p> <h2>grid-auto-flow: row</h2> <div class="grid-container" style="grid-auto-flow: row;"> <div class="item1">1</div> <div class="item2">2</div> <div class="item3">3</div> <div class="item4">4</div> </div> <h2>grid-auto-flow: row dense</h2> <p>"dense" 值填充网格中的空洞：</p> <div class="grid-container" style="grid-auto-flow: row dense;"> <div class="item1">1</div> <div class="item2">2</div> <div class="item3">3</div> <div class="item4">4</div> </div> </body> </html>