Why certain DOCTYPE declarations cause 100%-height tables and divs to stop working?

Question

It seems to me that some DOCTYPE declarations in IE (6-8) may cause the browser to ignore height=\"100%\" on tables and divs (style=\"height:

Answer 1

A real solution to this "problem" would be using the following CSS:

html, body {
    margin: 0;
    padding: 0;
    border: none;
    height: 100%;
}

#mydiv {
    height: 100%;
}

However remember that a border adds height.