You can create a page that contains a predesigned CSS layout, or create a completely blank page and then create a layout of your own.
The predesigned CSS layouts provide the following types of columns:
Selecting one of the XHTML document type definitions from the DocType (DTD) menu makes your page XHTML-compliant. For example, you can make an HTML document XHTML-compliant by selecting XHTML 1.0 Transitional or XHTML 1.0 Strict from the menu. XHTML (Extensible Hypertext Markup Language) is a reformulation of HTML as an XML application. Generally, using XHTML gives you the benefits of XML, while ensuring the backward and future compatibility of your web documents.
Avoid using spaces and special characters in file and folder names, and do not begin a filename with a numeral. In particular, do not use special characters (such as é, ç, or ¥) or punctuation marks (such as colons, slashes, or periods) in the names of files you intend to put on a remote server; many servers change these characters during upload, which will cause any links to the files to break.