html, css - weird invisible margin below pictures

Question

I\'m going bananas here, somehow below all of my images in my page there is a gap, a margin which isn\'t there in the code. Even Firebug can\'t see it but Firefox and Safari

Answer 1

sorry to answer to this question 3 year later, but this page is in first google page and i feel responsibility ..... answer: only add "vertical-align: top;" to img tag inside a tag.