To edit an element’s design, activate the element by clicking it in the preview window.
Once an element is selected, the Properties panel will open on the left side of the builder. To access design settings for the selected element, click the Design tab (indicated by a painter’s palette icon) near the top of the Properties panel.
Here, you’ll find all of the available design controls for the selected element. These vary depending on the element, but some typical Design control sections are: Layout, Typography, Background, Size, Spacing, and Borders.