The problem: you click a jump link like <a href=”#header-3″>Jump</a> which links to something like <h3 id=”header-3″>Header</h3>. That’s totally fine, until you have a position: fixed; header at the top of the page obscuring the header you’re trying to link to! Fixed headers have a nasty habit of hiding the element you’re trying to link to. There used to be all kinds of wild hacks to get around this problem. In fact, in the design of CSS-Tricks as I write,…