Hello Thomas,
The different padding comes from the different HTML rendering we are using for IE6/7/8 and other browsers. While in all modern browsers (Including IE9, Firefox, Opera, Safari, Chrome) we are using CSS3 border radius property, in IE6/7/8 we are rendering an additional table element to create the rounded borders. Because of the different elements and different CSS classes and CSS cascades.
You could use the following CSS fix in order to have equal padding in all browsers:
Greetings,
Bojo
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