Removing hover border on images

This would remove it on all hover links:

a:hover {
     border:0;
}

Unless, of course, you have CSS specific to your images that’s creating the border on hover, which you can easily edit to be border:0; too.

What images are you seeing borders on hover? I’m looking at your site and I don’t notice the issue on the main page.

At line 285 of your CSS you’ll see this:

.entry img, .entry img:hover {
padding: 5px;
border: 1px solid #ccc;
}

Delete that entire section, as the padding isn’t needed if you don’t want the border.