CSS centering with 100% width 
I'm trying to center all the content of a page so that when you adjust the size of the browser, the content moves along with the adjustment. I use the CSS code:

    margin: 0px auto;
    width: 670px;

However, I want a colored header to cover 100% of the width, while the text within the header adjusts with the rest of the page. How do I simultaneously do these two things?
CSS centering with 100% width 
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I'm trying to center all the content of a page so that when you adjust the size of the browser, the content moves along with the adjustment. I use the CSS code:

    margin: 0px auto;
    width: 670px;

However, I want a colored header to cover 100% of the width, while the text within the header adjusts with the rest of the page. How do I simultaneously do these two things?