How to change width?

If I can help – to find out where and what is the code – go under your firefox browswer. Click add-on and download firebug. Then type your domain and click on the little bug. A window will show at the bottom – One side HTML and the other Style. Use the rectangular to put it anywhere into your page – that will show you what is the name of that place. It’s doesn’t change your domain but it can give you an idea where and what it’s called. Once you find it – then go to your dashboard WP, under editor or WPide and typle ctrl + F and it will search that same exact line you are looking for to change it the way you want. Always make a copy on your notepad so if you make a mistake you can put it back. Hope that help.