title: Equivalent to <center> tag in CSS?
body: <p>I read that the <code>&lt;center&gt;</code> tag is deprecated, however I cannot find any real equivalent to it in CSS. <code>text-align</code> works for text but not other elements, and auto margins only work if you know the width of the container (so not a solution if you don't know the width in advance). So is there any real equivalent to this <code>&lt;center&gt;</code> tag?</p>