css code

Hi firstly I did ask this question before several weeks ago and don’t want to get into trouble for a duplicate post that didn’t get answered. Is there a way to delete your posts that don’t get answered so this don’t happen? I may of put it in the wrong forum.

What I needed help with is when I changed background colour to black by adding a css code, it didnt change the top of the page where banner and menus are this is unfortunately still white. Also I would need to change the menu font to white if that is possible.
This is the code I used

#content {
background-color: #000;
}
body {
color: white;
}

Another problem I have been trying to solve for weeks is changing the colour of the font in the heading in the widgets to white? I changed the font colour to white for the site but it didn’t change the headings in both widgets. Thanks so much and sorry if wrong forum if so if someone could be so kind to tell me so I don’t make an mistakes and upset anyone thanks

The page I need help with: [log in to see the link]