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:: CSS INTERMEDIATE TUTORIAL ::



Class and ID Selectors

For the CSS Beginner Tutorial we looked solely at HTML selectors - those that represent an HTML tag.

You can also define your own selectors in the form of Class and ID selectors.

The benefit of this is that you can have the same HTML element, but present it differently depending on its class or ID.



In the CSS, a class selector is a name preceded by a full stop (.) and an ID selector is a name preceded by a hash character (#).

So the CSS might look something like: 
#top {
	background-color: #ccc;
	padding: 1em
}

.intro {
	color: red;
	font-weight: bold;
}

The HTML refers to the CSS by using the attributes id and class. It could look something like this:

<div id="top">

<h1>Chocolate curry</h1>

<p class="intro">This is my recipe for making curry purely with 
chocolate</p>

<p class="intro">Mmm mm mmmmm</p>

</div>


The difference between an ID and a class is that an ID can be used to identify one element, whereas a class can be used to identify more than one.

You can also apply a selector to a specific HTML element by simply stating the HTML selector first, so p.jam { whatever } will only be applied to paragraph elements that have the class 'jam'.