Browser tab: Page title shows first, then website title

Hello everyone,

I designed my website using Twenty Twelve theme, I made a few adjustments, but nothing major. I just noticed the titles on the browser tabs are backwards or is it designed to be like this? I.e. my website’s name is “aldo cherres” and my website’s page names are “home”, “about”, “art” and “contact”, the browser tabs read it like this: “about | aldo cherres” and so forth, except on the home page where it reads like this: “aldo cherres | Still life….” Is there any way to adjust it so the browser tabs start with the website name first followed by the page name? I hope is not confusing, you can check my website to see what I mean: aldocherres.com, any advise will be appreciated, thanks!