Inline class

[ssimo3lsuhsc]

I've recently discovered Gridforms, and I like that its forms are dense enough to print out on the same page where Bootstrap would require two or three. However, I'm facing a situation where I need to simulate an input mask. An input mask is a fixed character that appears between two variable characters, such as the punctuation in a phone number (123-456-7890). I would like to know if there is a class I can add to my that will prevent it from scaling up to 100% and display as "inline-block" next to its following and siblings. Thank you!