Source Code in Message Templates for aligning images next to each other

Summary:

Hi,

I'm trying to put two images next to each other in a message template. Before saving, the pictures appear next to each other but upon saving, they appear under each other.

Content (required):

Does anyone know what I may need to modify in the source code to have them sit next to each other?

Version (include the version you are using, if applicable):

Code Snippet (add any code snippets that support your topic, if applicable):