Adding Background to the Header:
Click the plus button
at the bottom of the CSS Styles panel to create a new rule.
Select the ID selector type.
Name the rule #header.
Click OK.
Select the Type category on the left.
Set Color to white.
Select the Background category on the left.
For the Background Color, type #0E2D63.
Click OK.
Adding Background to the Footer:
Double click the footer css style in the CSS Styles panel:
Select the Type category on the left.
Set Color to white.
Select the Background category on the left.
For the Background Color, type #0E2D63.
Click OK.
Adding Background to the Sidebar:
From the CSS Styles panel, double-click the sidebar rule to open it for editing.
Select the Background category on the left.
Type #AAC7CE as the Background Color.
Click OK.