做项目遇到的问题,这是用div模拟的表格,用 flex 实现,想做鼠标划过整行显示一个背景色。但是发现行元素的宽度不对,不能占满可滚动区域的宽度。 简易复现代码: Document * { box-sizing: border-box; } .container { width: 800px; margin: 100px auto; overflow: auto; } .row { display: flex; background-color: rgba(32, 288, 180, 0.1); width: max-content; } .action-column { flex: 0 0 300px; border: 1px solid #aaa; padding: 20px; } .column { flex: 1 0 auto; min-width: 200px; border: 1px solid #aaa; padding: 20px; } test test test asdfasdfadsf asdfasdfadsf asdfasdfadsf asdfasdfadsf asdfasdfadsf asdfasdfadsf asdfasdfadsf asdfasdfadsf 背景色:  元素选择器选中: 