I wanted to create a gallery with thumbnails, however I ran into an issue. If I want to space out the thumbs, I should do something like margin-right: 15px;, however that would create space for the furthest-right image. How would I go about creating those spaces without having them at the edge of a template?
Example:

Thanks!
What you need is negative margins on the container element:
http://jsfiddle.net/LYhum/
If your container is responsive (ie. you don’t know how wide it will be), flexbox is worth a look:
http://jsfiddle.net/LYhum/4/ (has fallback for browsers without flexbox support)