The CLASS attribute groups tags that are going to have a particular characteristic in common. The main use of the CLASS attribute is to relate a group of elements to style sheet rules. The CLASS ...

As I noted earlier, they are definently not interchangerbel. If there are clashing definitions in a class and an id, the one in the id will weight out, since it's more specific.<BR><BR>It's ...

Ryan Boudreaux continues his tutorial on getting acquainted with jQuery by showing you how to get objects by ID and Class selectors and by Tag and Attribute.

Description 我们刚刚证明了浏览器读取 CSS 是由上到下的。 这就意味着，如果发生冲突，浏览器将会应用最后声明的样式。 不过我们还没结束，还有其他方法来覆盖 CSS 样式。 你还记得 id 属性吗？ 通过给 h1 元素添加 id 属性，来覆盖 class 属性定义的同名样式。

Instead of using both a NAME attribute and an ID attribute, you get two uses from one attribute. Refine your CSS rules: In CSS, you can apply styles to HTML tags so that (for instance) every H3 tag ...

In addition to applying existing id and class attributes, you will need to make a CSS change to one of the style properties. In order to make the page look like the screenshot below, be sure that the ...