Monday 20th of October 2014 02:57:54 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.




overlap each other due to negative margins, which elements are"on top?" You'll note that few of the examples inthis section use background colors for all elements. That'sbecause if they did, content might get overwritten by the backgroundcolor of a following element. The CSS specification does not say whatshould happen when elements overlap in this manner; instead,it's left up to implementors to decide.

It has been argued that all foreground content is always shown"in front of " all background content, and the behavior

That's all it takes.

There may be times where you want a different amount of space on eachside of an element. That's simple as well. If we want allH1 elements to have a top margin of 10 pixels, aright margin of 20 pixels, a bottom margin of 15 pixels, and a leftmargin of 5 pixels, here's all we need:

H1 {margin: 10px 20px 15px 5px; background-color: silver;}

As Figure 7-8 reveals, we have what we wanted. Theyellow border, it's this easy:

As previously discussed, if no colors are defined, then the default color is the foreground color of the element. Thus, the following declaration will be displayed as shown in Figure 7-44:

P.shade1 {border-style: solid; border-width: thick; color: gray;}
P.shade2 {border-style: solid; border-width: thick; color: gray;
border-color: black;}

The result is that the first paragraph has a gray border, having browser. You may wish to follow along one step at a time, reloading your page at each step, in order to know when things go wrong -- assuming they do.

For their trial run, they decide to use a one-page article that talks about suricates in general terms, examining their life in the wild and their general appeal to humans. The article appears in the magazine as shown in Figure 11-6.

7.5.1. Percentage Values and Padding

As stated earlier, it's possible to set percentage values for the padding of an element. Percentages are computed in relation to the width of the parent element, so they can change if the parent element's width changes in some way. For example, assume the following, which is illustrated in Figure 7-59: