随着响应式设计的大量需求，Bootstrap为表格提供了一个响应式设计的容器(.table-responsive),将.table-responsive样式包装在.table样式外部即可创建响应式表格
在小屏幕(<768px)水平滚动，大屏幕上水平滚动条消失
<div> <table> </table> </div>
//源码 .table-responsive { min-height: .01%; overflow-x: auto; } //把原有.table样式得底部外边距margin-bottom从20px改成了0px，目的是消除滚动条带来的上下高度差 //并在.table-responsive样式上设置了一个margin-bottom:15px,避免和容器外部的下一个元素重叠 @media screen and (max-width: 767px) { .table-responsive { width: 100%; margin-bottom: 15px; overflow-y: hidden; -ms-overflow-style: -ms-autohiding-scrollbar; border: 1px solid #ddd; } .table-responsive > .table { margin-bottom: 0; } .table-responsive > .table > thead > tr > th, .table-responsive > .table > tbody > tr > th, .table-responsive > .table > tfoot > tr > th, .table-responsive > .table > thead > tr > td, .table-responsive > .table > tbody > tr > td, .table-responsive > .table > tfoot > tr > td { white-space: nowrap; } .table-responsive > .table-bordered { border: 0; } //可以看到table-responsive给自己加了一个1px的外边框，如果在table上在使用table-bordered样式得话，就会和表格的外边框重合，就会变粗，所以进行了以下代码的编写 .table-responsive > .table-bordered > thead > tr > th:first-child, .table-responsive > .table-bordered > tbody > tr > th:first-child, .table-responsive > .table-bordered > tfoot > tr > th:first-child, .table-responsive > .table-bordered > thead > tr > td:first-child, .table-responsive > .table-bordered > tbody > tr > td:first-child, .table-responsive > .table-bordered > tfoot > tr > td:first-child { border-left: 0;//所有tr的第一个单元格(最左边的一列)的左边框设置为0px } .table-responsive > .table-bordered > thead > tr > th:last-child, .table-responsive > .table-bordered > tbody > tr > th:last-child, .table-responsive > .table-bordered > tfoot > tr > th:last-child, .table-responsive > .table-bordered > thead > tr > td:last-child, .table-responsive > .table-bordered > tbody > tr > td:last-child, .table-responsive > .table-bordered > tfoot > tr > td:last-child { border-right: 0;//所有tr的最后一个单元格(最右边的一列)的左边框设置为0px } .table-responsive > .table-bordered > tbody > tr:last-child > th, .table-responsive > .table-bordered > tfoot > tr:last-child > th, .table-responsive > .table-bordered > tbody > tr:last-child > td, .table-responsive > .table-bordered > tfoot > tr:last-child > td { border-bottom: 0;//最后一行tr里的单元格的底部边框设置为0px } }
