The image is square, but the white image background blends seamlessly with the page background. It is also possible to specify one or more colors in a GIF's palette as transparent.  Here's a link to my <A HREF="mailto:johnmack@udel.edu?subject=Your Awesome MAD-DOG Page!">
e-mail: &nbsp;<IMG ALT="Great Page, Mad Dog!" src=mailbox.gif></a> so you can complain about this page.  The link encloses both 
the image (with default border) and the blue underlined text. Note Wednesday 07th of January 2009 03:39:40 PM

CSS Tutorials

CSS Tutorials

Welcome to the CSS Tutorials. In this section we cover Cascading Style Sheets, the powerful supplement to HTML that allows you complete control over the look of your websites. We'll show you how to create Cascading Style Sheets, and some of the cool tricks you can achieve with them.

For Beginners...

Introduction to CSS
This tutorial covers the basics: what are style sheets? How do I make a style sheet? It also shows some of the cool things you can do with style sheets.

CSS Units
A description of all the units that can be used with CSS, including lengths, percentages, colours and URL's.

For Intermediate Users...

Controlling Background Images and Colours
Learn how to use CSS properties to add background images and colour to your Web pages. Lots of neat tricks and examples are included!

Controlling Fonts with CSS
In this tutorial we take a look at how to control the fonts used in your page body text, using the various font properties that can be controlled with style sheets.

Controlling Text Appearance with CSS
This tutorial shows you how to control the layout of your text using the text properties available in CSS, such as line spacing and text alignment.

Making Lists Look Nicer with CSS
You can really go to town with HTML lists when you add a sprinkle of CSS! This tutorial shows you how to make your lists stand out from the crowd.

For Advanced Users...

CSS Positioning
This tutorial teaches you how to use CSS to position images, text, and other elements on your Web pages. Essential reading for anyone who wants to start using CSS for layout.




maximum of the negative margins and subtract that from the maximum ofany positive margins.

In the case where there are only two margins to be collapsed, onepositive and the other negative, the situation is handled in a fairlysimple manner. The absolute value of the negative margin issubtracted from the positive margin -- or, to put it another way,the negative is added to the positive -- and the resulting valueis the distance between the elements.