Point frag IDs to #0 instead of just # #18
Description
A lot of the links in your demos are pointing to href="#", which has the unwanted (but totally correct) side effect of skipping up to the very top of the page when clicked.
By simply pointing these hrefs to #0 instead, we can remove this behaviour. Because IDs seldom start with a number, we know that id="0" is highly unlikely to appear in our DOM; this means that if we click a link referencing it, nothing will (or can) happen, and we just stay where we are.
Here’s a little demo: https://jsfiddle.net/atwnxo8L/