Simple template to build responsive websites easily
<link rel="stylesheet" href="https://cdn.jsdelivr.net/gh/lixcp/gridsystem/grid.css" crossorigin="anonymous" referrerpolicy="no-referrer">
576px
=> 'xs'
768px
=> 'md'
992px
=> 'lg'
1200px
=> 'xl'
1400px
=> 'xxl'
<div class="row">
<div class="col-12">
<div class="content yellow">Header</div>
</div>
</div>
you can use col
...col-12
and use col-xs-1
...col-xxl-12