Question

I have a weird gap between my columns, which should be removed. But when I set the column-gap to 0px, there remains a 1px gap.

You can see it here:

http://onezeromany.com/results.html

Answer 1

Remove width and don’t set the no repeat, I removed the width and disabled background-repeat. After I have don this, the border was gone.

the class looks no like this

.tile {
height: 310px;
background-position: center top;
}

Hope this is it.