Sizing In-text Citations

Hi all, 

I am working with Word and EndNote X7. I got a problem: some in-text citations (just numbers) have become of the same size of the main text, and are not superscript anymore. (No idea how it happened).

Is there any way to change them again as superscript and smaller size? I mean…no one by one because they are a lot. I’ve tried through the Style Manager in EndNote, but there is nothing about the citation style.

Thank you very much for your help!