Using IDs and Classes

¢Use an id to distinguish something, like a paragraph, from the others in a document.

—For example, to identify a paragraph as “head”, use the code:

<p id=“head”>… </p>

.

Working With Ids

¢To create an ID for a specific tag, use the property:

—<tag ID=id_name>

¢To apply a style to a specific ID, use:

—#id_name {style attributes and values}

Classes

¢HTML and XHTML require each id be unique– therefore an id value can only be used once in a document.

¢You can mark a group of elements with a common identifier using the class attribute.

<element class=“class”> … </element>

Applying a style to a class