It's a checkbox field with several choices of language levels by SEFR - A1, A2, B1,B2, C1, C2. I want to use it to add to my website language courses. If adding a course I chose let's say A1 and A2 checkboxes, on the resulting page with this course there will be a line: Levels: A1,A2. That's where I want to put a space between the values A1 and A2