Header and Menu Bar overlapping

For me it looks ok (Firefox, Chrome)… your header is above the menu, no overlapping… can you please make a screenshot and mark the problem, if I don’t get it right ??

https://i793.photobucket.com/albums/yy214/Steaphen/wordpress.png

it may be a little hard to see but you can see a little overlapping

Your #branding img (guess line 530 in your style.css) has a negative margin-bottom…

#branding img {
    height: auto;
    margin-bottom: -7px;
    width: 100%;
}

Solution: Set the -7px to 0px

??

Thank you(: Problem Solved!