Hi Duncan, welcome aboard the Wappler train.
Wappler uses the Bootstrap framework for layout, styling and components. It is therefore beneficiary to learn the Bootstrap framework. The best way to do that is to create a project like yours and refer to the documentation as you go along.
In this case, you need to have a proper understanding of the Bootstrap layout
Read up on the following topics:
- Containers
- Bootstrap Grid
- Grid Options
3.1. Auto Layout Columns
3.1.1. Equal Width
3.2. Responsive Classes
3.2.1. Row Colimns
I hope that helps.