Center everything on the theme?

Hi Alex,

I’m kind of new to coding so please don’t mind this question.

I’d like to center the Page Title, Content Headlines, all of Content, and the Comment Box (for all devices). Tried doing it, all attempts were unsuccessful. I wouldn’t mind putting in a “center everything on the theme” styling command.

Thanks.

PS – I managed to reduce the width (line 273, but adding float: center; to center the content didn’t work out.