How to wrap 6 columns of col-3 on 2 rows - css

Question

Is it possible to make 6 col-3 columns wrap the last 3 onto a second row and have them centered?
Basically, I need a way to offset the first column by col-1.5
<div class="row mx-n2 d-flex justify-content-start justify-content-lg-center">
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
</div>

Answer 1

You should be able to do something like this:
.center {
margin: 0 auto;
}
<div class="row">
<div class="center">
<div class="col-md-3">Div 1</div>
<div class="col-md-3">Div 2</div>
<div class="col-md-3">Div 3</div>
</div>
</div>
<div class="row">
<div class="center">
<div class="col-md-3">Div 1</div>
<div class="col-md-3">Div 2</div>
<div class="col-md-3">Div 3</div>
</div>
</div>

Answer 2

An alternative to adding multiple .rows would be using a .w-100 div that is only visible for large devices (.d-none for generally hiding it and .d-lg-block) for displaying it, resulting in breaking the line for large screens).
Combining this with .justify-content-center results in your desired behavior. A minimal working example is listed below:
.col-6 {
border: 1px solid gray;
}
<script src="https://code.jquery.com/jquery-3.2.1.slim.min.js" integrity="sha384-KJ3o2DKtIkvYIK3UENzmM7KCkRr/rE9/Qpg6aAZGJwFDMVNA/GpGFF93hXpG5KkN" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/popper.js#1.12.9/dist/umd/popper.min.js" integrity="sha384-ApNbgh9B+Y1QKtv3Rn7W3mgPxhU9K/ScQsAP7hUibX39j7fakFPskvXusvfa0b4Q" crossorigin="anonymous"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap#4.0.0/dist/js/bootstrap.min.js" integrity="sha384-JZR6Spejh4U02d8jOt6vLEHfe/JQGiRRSQQxSfFWpi1MquVdAyjUar5+76PVCmYl" crossorigin="anonymous"></script>
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap#4.0.0/dist/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<div class="row justify-content-center">
<div class="col-6 col-lg-3">1</div>
<div class="col-6 col-lg-3">2</div>
<div class="col-6 col-lg-3">3</div>
<div class="w-100 d-none d-lg-block"></div>
<div class="col-6 col-lg-3">4</div>
<div class="col-6 col-lg-3">5</div>
<div class="col-6 col-lg-3">6</div>
</div>
Result for small devices:
Result for large devices:

Answer 3

You can add this in between:
<div class="w-100"></div>
Like:
<div class="row mx-n2 d-flex justify-content-start justify-content-lg-center">
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="w-100"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
<div class="col-6 col-lg-3"></div>
</div>
Check this: https://getbootstrap.com/docs/4.1/layout/grid/#equal-width

Answer 4

All you need is just use justify-content-lg-center.
Bootstrap use 12 grid system so all column which expand that limit for example here, last three column will automatically goes to new row.
div.col-lg-3 {
border: 1px solid;
}
<link href="https://cdn.jsdelivr.net/npm/bootstrap#5.2.2/dist/css/bootstrap.min.css" rel="stylesheet" />
<div class="container">
<div class="row justify-content-lg-center">
<div class="col-6 col-lg-3">1</div>
<div class="col-6 col-lg-3">2</div>
<div class="col-6 col-lg-3">3</div>
<div class="col-6 col-lg-3">4</div>
<div class="col-6 col-lg-3">5</div>
<div class="col-6 col-lg-3">6</div>
</div>
</div>