I've looked but...

[Ketsu]

I'm using one of Butterfree's layouts and I'm editing it as I type, but I have no idea what the

img {
border:0px;
}

is. I'm looking over Butterfree's CSS guide but I still can't find it. Help?

[Negrek]

It's setting all images so that they have no border by default. This means that when you make an image a link, it won't show up with an ugly blue/whatever color your links are line around it.

[Ketsu]

Thanks, Negrek. I'm done with my CSS and I hope I didn't choose bad colors. Wish me luck!