[SOLVED] Page menu with search bar 'how to remove white space' at the top of the menu

www.lostdogswestmidlands.co.uk

Problem is white space above the black border below the header on the 'Page menu color blue with search bar'

Please how can I remove the white space above the black border

I have positioned the search bar

search Box - When I remove the code below from the configure header area, it corrects itself,
the white space disappears

Search Box:
valign:top;
margin-bottom: -250;
padding: 0;
position: relative;
top:12px;
font: .80em candara, trebuchet ms, cali;
width: 25%;
height: 0;

I usually can find answers in the forum but totally stumped and would appreciate little help, thanks in advance