Personally I put a box inside a box when I was doing my blog so that I could have more control over the proportions.
That is, the text is placed within the inner box in a position which is intended to be harmonious: it allows me to specify the relationship between the text and the white space. I don't have control over the size of the browser window, but by putting a border around the content I can frame it in the way want, with the width of the margins in a particular proportion to the width of the text column , the height of the header and so on.
That's the rationale, at least; whether it works or not is a different question.
by Harry — May 05
That is, the text is placed within the inner box in a position which is intended to be harmonious: it allows me to specify the relationship between the text and the white space. I don't have control over the size of the browser window, but by putting a border around the content I can frame it in the way want, with the width of the margins in a particular proportion to the width of the text column , the height of the header and so on.
That's the rationale, at least; whether it works or not is a different question.