Many people whom aren't necessarily CSS wizards often ask, 'How do I centre the ads on my page?'. Well, the long answer is something along the lines of, 'Each webpage is unique and has its own CSS rules governing it'. However, there is an example piece of code that we can give you to help those of us whom just want a solution to what seems to be a simple request. If you want to try the following code on your page to see if you can centre the adunit:
<script src='//as.good-loop.com/unit.js' async></script> <div class="goodloopad" style="text-align: center; padding-left: 25%; padding-right: 25%;"></div>
How do you not show an ad? Easy: You decide where to place the
<div class='good-loop-ad'></div> tags -- no tag, no ad.
However that can be cumbersome if you want an ad on most pages, but with a few exclusions. For this case, we also have an "advert blacklist" tag. If you place this tag on a page, it will disable Good.Loop adverts on that page -- they won't show at all.