Create a Style Guide to record your site's design concepts
A style guide documents your site and page design elements -- it insures consistency and makes maintenance of the web site easier.
For the future -- Style Sheets!
HTML describes the structural aspects of documents, allowing authors to specify components of a document,
such as headings, paragraphs, lists and etc. But to the frustration of your average web page author, the
presentation of these components is ultimately under the control of the browser displaying them. Enter Style Sheets,
which allow the page author to control the presentation of a web page. But many browsers do not yet support style sheets.
See World Wide Web Consortium (W3C) Web Style Sheets (http://www.w3.org/Style/) for more information.