Centre alighnt ad in header surrounding colour

This is the blackant labs ad? Yes?

There is currently a div in the code with no class/id.

<div>
<a href="https://blackantlabs.com" target="_blank"><img src="https://www.dblcoverage.com/wp-content/plugins/sam-images/banner1.png"></a>
</div>

If you give this an id of says “advert”, so it becomes

<div id="advert">
...
</div>

The CSS for this would be something like:

#advert { background: #000; }

#advert a {
  margin: 0 auto;
  width: 604px;
  display: block;
}

Image of what it should look like here: https://i.imgur.com/9zjRU.png

I can’t do it like that as its a ad rotator script that puts the image there

what ad rotator plugin are you using?

Never mind, sorry, you said it in the first post.

Simple ad manager – wordpress plugin

At the very bottom of ad in the backend, you can add Code Before and Code After.

Try adding…

<div id=”advert”> for Code Before.

</div> for Code After.

Then add the CSS above.

OK I added those, and tried with the CSS, but nothing seems to be happening… bit miffed! But I’m not all that confident with CSS

Well I can’t see them around the ads, so are you sure you’ve added them in the right place?

Hmm odd – I def put in the backend, where do I manually add them?

also I have put a black image in and there is a thin line visable, where can I remove this?

Unfortunately I can’t really help any further. I’m unfamiliar with the theme and as I can’t see your site it’s very difficult to guess what the problem is.

Good luck finding a solution.