How to remove the 1px under the image?

how to remove the 1px under the image?which locates at the top right of the page. under the image.thank you

Try this:

a img {
border: 0 none;
[COLOR="#FF0000"]vertical-align: bottom;[/COLOR]

Mind you, it’s a tricky way to do a layout, and you are likely to have alignment problems in various browsers. It would be better to have an element 100% wide to achieve that green background.