Based on Bootstrap grid.
<abp-container>
<abp-row>
<abp-column>1 of 2</abp-column>
<abp-column>2 of 2</abp-column>
</abp-row>
<abp-row>
<abp-column>1 of 3</abp-column>
<abp-column>2 of 3</abp-column>
<abp-column>3 of 3</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col">1 of 2</div>
<div class="col">2 of 2</div>
</div>
<div class="row">
<div class="col">1 of 3</div>
<div class="col">2 of 3</div>
<div class="col">3 of 3</div>
</div>
</div>
<abp-container>
<abp-row>
<abp-column>column</abp-column>
<abp-column>column</abp-column>
<abp-column-breaker/>
<abp-column>column</abp-column>
<abp-column>column</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col">column</div>
<div class="col">column</div>
<div class="w-100"></div>
<div class="col">column</div>
<div class="col">column</div>
</div>
</div>
<abp-container>
<abp-row>
<abp-column>1 of 3</abp-column>
<abp-column size="_6">2 of 3 (wider)</abp-column>
<abp-column>3 of 3</abp-column>
</abp-row>
<abp-row>
<abp-column>1 of 3</abp-column>
<abp-column size="_5">2 of 3 (wider)</abp-column>
<abp-column>3 of 3</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col">1 of 3</div>
<div class="col col-6">2 of 3 (wider)</div>
<div class="col">3 of 3</div>
</div>
<div class="row">
<div class="col">1 of 3</div>
<div class="col col-5">2 of 3 (wider)</div>
<div class="col">3 of 3</div>
</div>
</div>
<abp-container>
<abp-row h-align="Center">
<abp-column size-lg="_2">1 of 3</abp-column>
<abp-column size-md="Auto">Variable width content</abp-column>
<abp-column size-lg="_2">3 of 3</abp-column>
</abp-row>
<abp-row>
<abp-column>1 of 3</abp-column>
<abp-column size-md="Auto">Variable width content</abp-column>
<abp-column size-lg="_2">3 of 3</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row justify-content-center">
<div class="col col-lg-2">1 of 3</div>
<div class="col col-md-auto">Variable width content</div>
<div class="col col-lg-2">3 of 3</div>
</div>
<div class="row">
<div class="col">1 of 3</div>
<div class="col col-md-auto">Variable width content</div>
<div class="col col-lg-2">3 of 3</div>
</div>
</div>
<abp-row>
<abp-column>col</abp-column>
<abp-column>col</abp-column>
<abp-column>col</abp-column>
<abp-column>col</abp-column>
</abp-row>
<abp-row>
<abp-column size="_8">col-8</abp-column>
<abp-column size="_4">col-4</abp-column>
</abp-row>
<div class="row">
<div class="col">col</div>
<div class="col">col</div>
<div class="col">col</div>
<div class="col">col</div>
</div>
<div class="row">
<div class="col col-8">col-8</div>
<div class="col col-4">col-4</div>
</div>
<abp-row>
<abp-column size-sm="_8">col-sm-8</abp-column>
<abp-column size-sm="_4">col-sm-4</abp-column>
</abp-row>
<abp-row>
<abp-column size-sm="_">col-sm</abp-column>
<abp-column size-sm="_">col-sm</abp-column>
<abp-column size-sm="_">col-sm</abp-column>
<abp-column size-sm="_">col-sm</abp-column>
</abp-row>
<div class="row">
<div class="col col-sm-8">col-sm-8</div>
<div class="col col-sm-4">col-sm-4</div>
</div>
<div class="row">
<div class="col col-sm">col-sm</div>
<div class="col col-sm">col-sm</div>
<div class="col col-sm">col-sm</div>
<div class="col col-sm">col-sm</div>
</div>
<!-- Stack the columns on mobile by making one full-width and the other half-width -->
<abp-row>
<abp-column size="_12" size-md="_8">.col-12 .col-md-8</abp-column>
<abp-column size="_6" size-md="_4">.col-6 .col-md-4</abp-column>
</abp-row>
<!-- Columns start at 50% wide on mobile and bump up to 33.3% wide on desktop -->
<abp-row>
<abp-column size="_6" size-md="_4">.col-6 .col-md-4</abp-column>
<abp-column size="_6" size-md="_4">.col-6 .col-md-4</abp-column>
<abp-column size="_6" size-md="_4">.col-6 .col-md-4</abp-column>
</abp-row>
<!-- Columns are always 50% wide, on mobile and desktop -->
<abp-row>
<abp-column size="_6">.col-6</abp-column>
<abp-column size="_6">.col-6</abp-column>
</abp-row>
<div class="row">
<div class="col col-12 col-md-8">.col-12 .col-md-8</div>
<div class="col col-6 col-md-4">.col-6 .col-md-4</div>
</div>
<div class="row">
<div class="col col-6 col-md-4">.col-6 .col-md-4</div>
<div class="col col-6 col-md-4">.col-6 .col-md-4</div>
<div class="col col-6 col-md-4">.col-6 .col-md-4</div>
</div>
<div class="row">
<div class="col col-6">.col-6</div>
<div class="col col-6">.col-6</div>
</div>
<abp-container>
<abp-row v-align="Start">
<abp-column>column</abp-column>
<abp-column>column</abp-column>
<abp-column>column</abp-column>
</abp-row>
<abp-row v-align="Center">
<abp-column>column</abp-column>
<abp-column>column</abp-column>
<abp-column>column</abp-column>
</abp-row>
<abp-row v-align="End">
<abp-column>column</abp-column>
<abp-column>column</abp-column>
<abp-column>column</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row align-items-start">
<div class="col">column</div>
<div class="col">column</div>
<div class="col">column</div>
</div>
<div class="row align-items-center">
<div class="col">column</div>
<div class="col">column</div>
<div class="col">column</div>
</div>
<div class="row align-items-end">
<div class="col">column</div>
<div class="col">column</div>
<div class="col">column</div>
</div>
</div>
<abp-container>
<abp-row v-align="Start">
<abp-column v-align="Start">column</abp-column>
<abp-column v-align="Center">column</abp-column>
<abp-column v-align="End">column</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row align-items-start">
<div class="col align-self-start">column</div>
<div class="col align-self-center">column</div>
<div class="col align-self-end">column</div>
</div>
</div>
<abp-container>
<abp-row h-align="Start">
<abp-column size="_4">One of two columns</abp-column>
<abp-column size="_4">One of two columns</abp-column>
</abp-row>
<abp-row h-align="Center">
<abp-column size="_4">One of two columns</abp-column>
<abp-column size="_4">One of two columns</abp-column>
</abp-row>
<abp-row h-align="End">
<abp-column size="_4">One of two columns</abp-column>
<abp-column size="_4">One of two columns</abp-column>
</abp-row>
<abp-row h-align="Around">
<abp-column size="_4">One of two columns</abp-column>
<abp-column size="_4">One of two columns</abp-column>
</abp-row>
<abp-row h-align="Between">
<abp-column size="_4">One of two columns</abp-column>
<abp-column size="_4">One of two columns</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row justify-content-start">
<div class="col col-4">One of two columns</div>
<div class="col col-4">One of two columns</div>
</div>
<div class="row justify-content-center">
<div class="col col-4">One of two columns</div>
<div class="col col-4">One of two columns</div>
</div>
<div class="row justify-content-end">
<div class="col col-4">One of two columns</div>
<div class="col col-4">One of two columns</div>
</div>
<div class="row justify-content-around">
<div class="col col-4">One of two columns</div>
<div class="col col-4">One of two columns</div>
</div>
<div class="row justify-content-between">
<div class="col col-4">One of two columns</div>
<div class="col col-4">One of two columns</div>
</div>
</div>
<abp-row gutters="false">
<abp-column size="_8">One of two columns</abp-column>
<abp-column size="_4">One of two columns</abp-column>
</abp-row>
<div class="row g-0">
<div class="col col-8">One of two columns</div>
<div class="col col-4">One of two columns</div>
</div>
<abp-row>
<abp-column size="_9">.col-9</abp-column>
<abp-column size="_4">.col-4<br>Since 9 + 4 = 13 > 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.</abp-column>
<abp-column size="_6">.col-6<br>Subsequent columns continue along the new line.s</abp-column>
</abp-row>
<div class="row">
<div class="col col-9">.col-9</div>
<div class="col col-4">.col-4<br>Since 9 + 4 = 13 > 12, this 4-column-wide div gets wrapped onto a new line as one contiguous unit.</div>
<div class="col col-6">.col-6<br>Subsequent columns continue along the new line.s</div>
</div>
<abp-container>
<abp-row>
<abp-column order="_12">First, but Last</abp-column>
<abp-column>Second, but unordered</abp-column>
<abp-column order="_6">Third, but Second</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col order-12">First, but Last</div>
<div class="col">Second, but unordered</div>
<div class="col order-6">Third, but Second</div>
</div>
</div>
<abp-container>
<abp-row>
<abp-column order="Last">First, but Last</abp-column>
<abp-column>Second, but unordered</abp-column>
<abp-column order="First">Third, but First</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col order-last">First, but Last</div>
<div class="col">Second, but unordered</div>
<div class="col order-first">Third, but First</div>
</div>
</div>
<abp-container>
<abp-row>
<abp-column size-md="_4">.col-md-4</abp-column>
<abp-column size-md="_4" offset-md="_4">.col-md-4 .offset-md-4</abp-column>
</abp-row>
<abp-row>
<abp-column size-md="_3" offset-md="_3">.col-md-3 .offset-md-3</abp-column>
<abp-column size-md="_3" offset-md="_3">.col-md-3 .offset-md-3</abp-column>
</abp-row>
<abp-row>
<abp-column size-md="_6" offset-md="_3">.col-md-6 .offset-md-3</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col col-md-4">.col-md-4</div>
<div class="col col-md-4 offset-md-4">.col-md-4 .offset-md-4</div>
</div>
<div class="row">
<div class="col col-md-3 offset-md-3">.col-md-3 .offset-md-3</div>
<div class="col col-md-3 offset-md-3">.col-md-3 .offset-md-3</div>
</div>
<div class="row">
<div class="col col-md-6 offset-md-3">.col-md-6 .offset-md-3</div>
</div>
</div>
<abp-container>
<abp-row>
<abp-column size-sm="_5" size-md="_6">.col-sm-5 .col-md-6</abp-column>
<abp-column size-sm="_5" offset-sm="_2" size-md="_6" offset-md="_">.col-sm-5 .offset-sm-2 .col-md-6 .offset-md-0</abp-column>
</abp-row>
<abp-row>
<abp-column size-sm="_6" size-md="_5" size-lg="_6">col-sm-6 .col-md-5 .col-lg-6</abp-column>
<abp-column size-sm="_6" size-md="_5" offset-md="_2" size-lg="_6" offset-lg="_">.col-sm-6 .col-md-5 .offset-md-2 .col-lg-6 .offset-lg-0</abp-column>
</abp-row>
</abp-container>
<div class="container">
<div class="row">
<div class="col col-sm-5 col-md-6">.col-sm-5 .col-md-6</div>
<div class="col col-sm-5 col-md-6 offset-sm-2 offset-md-0">col-sm-5 .offset-sm-2 .col-md-6 .offset-md-0</div>
</div>
<div class="row">
<div class="col col-sm-6 col-md-5 col-lg-6">col-sm-6 .col-md-5 .col-lg-6</div>
<div class="col col-sm-6 col-md-5 col-lg-6 offset-md-2 offset-lg-0">.col-sm-6 .col-md-5 .offset-md-2 .col-lg-6 .offset-lg-0</div>
</div>
</div>