同样的一段代码:<div class="list-group"> <a href="##" class="list-group-item active"><span class="badge">5902</span>图解CSS3</a> <a href="##" class="list-group-item list-group-item-success active"><span class="badge">15902</span>W3cplus</a> <a href="##" class="list-group-item list-group-item-info active"><span class="badge">59020</span>慕课网</a> <a href="##" class="list-group-item list-group-item-warning active"><span class="badge">0</span>Sass中国</a> <a href="##" class="list-group-item list-group-item-danger active"><span class="badge">10</span>Mobile教程</a></div>加上active,在线练习显示的颜色是这样子复制到sublime,打开浏览器显示却是这个样子,为何???
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