In order to get something similar to the layout you want, you would have to use nested rows
and columns
, so div
1 & 3 would be on a container which will use 6 columns out of the 12, like this (See in full screen):
.col-lg-6 {
border: 1px solid red;
min-height: 200px;
}
.col-lg-12 {
border: 1px solid blue;
min-height: 200px;
}
<link href="https://stackpath.bootstrapcdn.com/bootstrap/4.2.1/css/bootstrap.min.css" rel="stylesheet"/>
<div class="row">
<div class="col-lg-6">1</div>
<div class="col-lg-6">
<div class="row">
<div class="col-lg-12">2</div>
<div class="col-lg-12">3</div>
</div>
</div>
</div>
With Bootstrap you have the option to use the order-*
class, which helps you (of course) order the elements in a flex-container in whichever way you want, however this will not work since basically on your first level you only have 2 elements.
The other option you have, which actually works really well for these kind of two-dimensional layouts, is CSS Grid, which is native to CSS and can help you order your elements in any way and allow you to get the layout you need:
.grid {
display: grid;
grid-template-columns: 1fr 1fr 1fr;
grid-auto-rows: minmax(150px, auto);
grid-template-areas:
"g2 g1"
"g2 g3"
}
.grid-vertical {
grid-template-columns: 30%;
grid-template-areas:
"g1"
"g2"
"g2"
"g3"
}
.grid-item {
border: 1px solid #000;
}
.g1 {
grid-area: g1;
}
.g2 {
grid-area: g2
}
.g3 {
grid-area: g3
}
<div class="grid">
<div class="grid-item g1">1</div>
<div class="grid-item g2">2</div>
<div class="grid-item g3">3</div>
</div>
<div class="grid grid-vertical">
<div class="grid-item g1">1</div>
<div class="grid-item g2">2</div>
<div class="grid-item g3">3</div>
</div>
You can get more information about CSS Grid here.
You can also read more on Flexbox (which Bootstrap 4 is based on) here so you have more ways to manipulate Bootstrap's components