Question

i have a little problem here, this page at firefox, opera, chrome, has already center, but at IE 9 this page still at left.. tq for help….

Answer 1

First you need to change your width to something less than 100%

Then you need to change

margin-top: 50px;
margin-left: 0 auto;
margin-right: auto;

to

margin: 50px auto 0;

and it should work.

EDIT

I should have taken a closer look!

I would also change your .container. Give width:auto; a fixed width, 900px for example.

http://jsfiddle.net/jasongennaro/yj7mu/3/