Align two inline-blocks left and right on same line

Question

How can I align two inline-blocks so that one is left and the other is right on the same line? Why is this so hard? Is there something like LaTeX\'s \\hfill that can consume

Answer 1

If you're already using JavaScript to center stuff when the screen is too small (as per your comment for your header), why not just undo floats/margins with JavaScript while you're at it and use floats and margins normally.

You could even use CSS media queries to reduce the amount JavaScript you're using.