When examining this specific fiddle, a 1px gap is noticed between the background of the links and the background of the #content div in various browsers, even when zoomed at different levels (the reason for this zoom effect remains unknown). This issue seems to stem from the fact that the div containing the links occupies one additional pixel both at the top and bottom compared to the links themselves.
A temporary fix involves applying a negative margin-bottom, although I am in search of a more sophisticated solution that works seamlessly across all browsers. Any suggestions?