Remove space between header (nav) and body (content)

Hi Guys,

Hopefully somebody can help. Trying to remove some of the space between the nav and the body content. https://pax2.penrosedigital.com/?page_id=16

Using Inspect Element I Have identified

#content{
clear: both;
margin: 0px;
padding: 20px 10px;
}
When i change the top padding in Inspect Element it removes some space but doesn’t work when I copy the code to the custom css area of the theme.

#content
padding: 0px 10px !important;
}

Cant figure out why? Any help greatly appreciated.

Martin.