1<div class="container">
2 <div class="row">
3 <div class="col-md-8">.col-md-8</div>
4 <div class="col-md-4">.col-md-4</div>
5 </div>
6</div>
1<!-- Control the column width, and how they should appear on different devices -->
2<div class="row">
3 <div class="col-*-*"></div>
4 <div class="col-*-*"></div>
5</div>
6<div class="row">
7 <div class="col-*-*"></div>
8 <div class="col-*-*"></div>
9 <div class="col-*-*"></div>
10</div>
11
12<!-- Or let Bootstrap automatically handle the layout -->
13<div class="row">
14 <div class="col"></div>
15 <div class="col"></div>
16 <div class="col"></div>
17</div>
1.row{
2 display: flex;
3 flex-wrap: wrap;
4 margin-right: -15px;
5 margin-left: -15px;
6}