What does solid in border-style:solid mean? CSS : <p>I have an exam tomorrow and it's about CSS, we have always had border-style:solid; but I don't really know what it exactly does. It sure shows a border but why is it called "solid"? W3S doesn't really give me the answer...</p>

<p>Does solid mean e.g. the paraghraph's border is not movable?</p>

<p>Or does it mean the border's size cant change?</p>
