bootstrap col left align code example

Example 1: columns center bootstrap 3

<div class="row">
    <div class="col-md-2 col-md-offset-5"></div>
</div>

Example 2: bootstrap grids examples

<div class="container">
  <div class="row">
    <div class="col-md-8">.col-md-8</div>
    <div class="col-md-4">.col-md-4</div>
  </div>
</div>

Example 3: .col-12 bootstrap

.col-12{
	flex: 0 0 100%;
	max-width: 100%;
}

Example 4: .row bootstrap

.row{
    display: flex;
    flex-wrap: wrap;
	margin-right: -15px;
    margin-left: -15px;
}