Title Headers in Sidebar

I was wondering how I could put like title header thingies like in my sidebar for the title of each like section of it. See, here’s a link to my site: http://purrfection.sugar-melody.net and for an example you can go to my hosts site: http://sugar-melody.net like in the Mini Valley theme and the Cinnamorolll theme. Can anyone please tell me the code or something? Thanks!