<div class="container-fluid row m-0 p-0">
<div class="col-2 border">123</div>
<div class="col-10 border">123</div>
</div>
<div class="container-fluid">
<div class="row">
<div class="col-2 border">123</div>
<div class="col-10 border">123</div>
</div>
</div>
以上连个代码块是等价的,推荐使用第二个