The panelBox is used to place ancillary information on a page, offset by a certain color.
There are four possible attributes to set for the content container. The width of the
container can be set to either an exact pixel size or a percentage of the element the content container is
within. This is done by using the inlineStyle or styleClass attributes.
Content containers can have headers and icons. Set the text and icon attributes to gain
these items. If neither is set, the content container will only display its children. If there is a header but
no icon, the header will show and the content will be offset to line up with the start of the header. If an
icon is set, the icon will appear to the left of the header, but the content will still be offset to the left
of the header. If an icon is set but no header, the icon will still be displayed on the left but no header text
will be visible.