The meaning of col-xs, col-sm, col-md in bootstrap fence system css_html/css

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The meaning of col-xs, col-sm, col-md in bootstrap fence system css_html/css_WEB-ITnose

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Jun 24, 2016 am 11:48 AM

.col-xs-超小屏幕 手机 (<768px),.col-sm-小屏幕 平板 (≥768px),.col-md-中等屏幕 桌面显示器 (≥992px)(栅格参数).不管在哪种屏幕上，栅格系统都会自动的分12列 col-xs-*和col-sm-* 和col-md-*后面跟的参数表示在当前的屏幕中 div占的宽度。例如 <div class="col-xs-6 col-md-3"> 这个div在屏幕中占的位置是：1在超小屏幕中占6列 也就是屏幕的一半（6/12） 2.在中单屏幕中占3列也就是1/4（3/12）。 如果我们要在小屏幕上并排显示3个div(12/3=4)，在大屏幕上显示6个 则col-xs-4 col-md-2这样我们就可以控制我们自己想要的什么排版了。还有一种情况是  <div class="col-sm-10 col-md-8"> 后面跟的div中col-sm的参数如果为3 也就是 <div class="col-sm-10 col-md-8"></div> <div class="col-sm-3 col-md-4"></div>如果是这样 这两个div在小屏幕中会排2排 因为10+3>12 ,在中等屏幕中可以排同一排 8+4=12

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