If you are no longer happy with the size and spacing settings you made when creating a container, you can change them in the "Container settings" panel in the "Structure" workflow step.
Be careful when changing the container size: If you change the container size at a later time, all settings you made for this container (cuts, layout, mobile behavior) will be lost.
You can also set the background color and spacing for your container individually for a specific mailing. To do so, use the "Container settings" panel.
