Strange line problem

Please have a look on this link

the title in bold (above the big picture) has a black line that I don’t know where it comes from and how to remove it.

Any ideas?

You’ve got this code in your document which is causing the line above your h3.

<div style="margin-top:20px; border:1px solid #333; width:250px; background-color: #fff;"></div>