Yes i can do it with a container but the thing is that i want to extend the background for each part for as long as the browser window is. That’s why i made a class named interior for each div (#header, #main-content, etc) That class is in charge of keeping the document aligned to the center of the screen. If i give a width to those divs the backgroun will be cutted to fit the width of the div, and that’s not what i want.
Maybe there’s another tecnique to do this. Please let me know if you know one.