I'm attempting to add a DOCTYPE Declaration to a SharePoint masterpage so i can get some CSS code working. I'm new to sharepoint and I do not know where to look for the masterpage so it can be editted. I have access to SharePoint Designer and site settings.
Ive tried just adding the tag to the default.apsx page but i get an error stating that things cannot be added outside of a script.
Any help would be much appreciated thanks.