I have some unexplainable image margin/Space below img when including images in my wordpress theme. You can see it here: http://www.wlanradios.net/logitech-squeezebox-radio/
See the Amazon logo image inside the content or scroll down and have a look in the "Ähnliche WLAN Radios" sidebar widget with the small thumbnails. The images seem to have a little margin-bottom / Space below it I can not get rid off. I discovered the html/css with firebug but don't get the it where this margins comes from. I in fact tried to
img {
margin:0!important;
padding:0!important;
border:0!important;
}
to overwrite every possible causes for the margin, with no success.
Where is the margin coming from and how to remove it?