HTML and CSS
Editcss
http://www.w3.org/Style/CSS/
9 Visual formatting model
http://www.w3schools.com/css/
CSS Zen Garden
Centered page
Nested tables
Sample dropdown menu
Horizontal CSS Menu Tutorial ~ Example Page 7
http://www.websemantics.co.uk/tutorials/useful_css_snippets/
Why tables for layout is stupid
Tableless layout HOWTO
Nested DIV layout
CSS float tutorial
http://www.tanfa.co.uk/css/layouts/css-multi-column-layout-ap2.asp
More about nested tables
Lists and CSS
Listamatic
Cascading Style Sheets, level 2 (CSS2 Specification)
Table designs based on CSS and DIV elements
http://www.webreference.com/programming/css_frames/
HTML and CSS
http://www.positioniseverything.net/
Lots of header/footer/columns stuff in DIV
http://www.projectseven.com/tutorials/css/uberlinks/
http://www.w3.org/TR/REC-CSS2/
http://selfhtml.org
More about CSS and layouts
Visual formatting model
another one about css layouts
Creating Liquid Layouts with Negative Margins
CssLayouts
Fixed menu example
Scrollable table with fixed header
HTML Dog
A CSS tutorial
Accessible HTML/XHTML Forms