To ensure flexible and well behaved formatting across email clients we advise using tables for structuring your layout and shaping your content. For example, you could insert images within a table so that text can wrap around the image.
It is important to keep Template designs simple, and not nest too many tables within each other. This is because inserting tables within further tables can lead to Campaign rendering issues in your recipient's mailbox.
An example of adding multiple tables within a larger table is shown below.