容器是Bootstrap 中最基本的佈局元素，容器container 會預設的當你自適應寬跟 ... 就行了，下面範例是將row 置中另外三個row 分別對應佈局的上中下。 ... <看更多>

So for example, a column of size 2 would be centered by adding an offset of 5, that's (12-2)/2 . In markup this would look like: <div class="row"> <div ... ... <看更多>