Border above and below a table; black border at the top of the site; page width

Hello, Apologies for asking multiple questions in one post but 1. I have inserted a table in my home page at www.spiritofyoga.co.uk using the MCE table buttons plugin. The border in the table is set to 0, but I can still see the border above and below the table. 2. How do  remove the black  border at the top of the page? 3. Is it possible to increase the width of the pages? For example, right now the page starts under the menu item "classes". I would like it to start near "Home" Thanks Poornima