the .row class to set display to flex and flex-direction to flex-row
<div class="row">
<p class="w-12">
I'm a div .row
</p>
<div class="col">
I'm a div .col
</div>
<div class="col">
I'm a div .col
</div>
<div class="col">
I'm a div .col
</div>
</div>
I'm a div .row
the .col class set display to flex and flex-direction to flex-column
<div class="row bg-light-blue-600 p-4 mb-4">
<p class="mb-4 w-12">
I'm a div .col
</p>
<div class="row b p-4 bg-grey-400 bb-0 ">
I'm a div .row
</div>
<div class="row b p-4 bg-grey-400 bb-0">
I'm a div .row
</div>
<div class="row b p-4 bg-grey-400 ">
I'm a div .col
</div>
</div>
I'm a div .col
the class .col-w-{ 1-12 } will change the width of a column
<div class="row bg-grey-200 p-4 mb-4">
<div class="col b p-4 bg-grey-400 b br col-w-4">
I'm a div .col-w-4
</div>
<div class="col b p-4 bg-grey-400 col-w-8">
I'm a div .col-w-8
</div>
</div>
you can also use fractions like .w-1/2 , w-3/4, w-2/6 w-4/12 in oder to change width and h-1/2 h-3/4 etc.
<div class=" bg-grey-200 p-4 mb-4">
<div class=" b p-4 bg-grey-400 b br w-3/4">
I'm a div .w-3/4
</div>
<div class=" b p-4 bg-grey-400 w-6/12">
I'm a div .w-6/12
</div>
</div>