Layout of all pages is altered with CSS in the main page definition (Control Panel -> Pages -> Look and feel -> CSS)
The showpage has a layout definition different then the other pages, therefore CSS definitions of the main site should also be added to this page
elements in the showcases contain CSS
News elements on the mainpage contain CSS
How to add a news message
In order to add a news message there are multiple options:
1) Go to manage in the top Liferay dock bar:
go to the control panel
go to web content
add web content
2) In the list of news items, click on "add new" and then "web content":
type your news item with title and abstract and body
make sure to add the categorie "news mesage" under the tab "categorization".
save the item as draft as long as it is not ready for publishing yet.
publish the item once it is ready to be shown to the public.
non-published items will not be shown to anyone but owners and administrators.
all web content items can be found within the control panel - web content and editted there as well.
you can retract web content by changing the status to draft.
You can delete this message when you have added actual news items.