Proficient in CSS DIV web page style and layout CSS_html/css_WEB-ITnose

CSS, the English name is Cascading Style Sheet, and the Chinese name is Cascading Style Sheet, is a markup language used to control page styles and allow the separation of style information from web content. DIV CSS is a WEB design standard. It is a The layout method of web pages. Different from the traditional way of positioning through table layout, it can realize the separation of web page content and presentation. When it comes to DIV CSS combination, we have to start with XHTML. XHTML is a new language optimized and improved on the basis of HTML (a subset of the Standard Universal Markup Language). It aims to adapt to more needs of future network applications based on XML applications and powerful data conversion capabilities. "DIV CSS" is actually a misnomer, and the standard name should be XHTML CSS. Because DIV and Table are both tags in XHTML or HTML language, and CSS is just a form of expression.

Next, the editor will start with the most basic CSS.DIV web page style and layout, slowly introduce it, go in depth bit by bit, and then analyze it slowly with examples, hoping it will be helpful to everyone. Usually when we learn CSS, we should try our best to refer to other websites when writing CSS. For example, Baidu, Google, etc., by learning the CSS code of other websites, you can quickly get a different feel for the page design, and it is easier to get started. We call this "standing on the shoulders of giants." Today I will briefly introduce the basic concepts of CSS and the basic syntax of CSS. First, let's look at a picture:

Next, the editor will follow the context of this picture and gradually increase the basic knowledge of CSS.

A first look at CSS

Concept: CSS (Cascading Style Sheet), translated into Chinese as Cascading Style Sheet, is used to control web page styles and allow A markup language that separates style information from web page content.

Use CSS to control the page: There are four ways to control the page with CSS: inline style, inline style, link style and imported style. For slightly larger web pages, we will use the link style because it separates HTML and CSS to facilitate later maintenance and is clear and clear.

Basic syntax

For CSS selectors, that is, which html objects we select for CSS style control, there are three types: tag selectors, category selectors and ID selector, next, the editor will introduce these three selectors in detail.

Tag selector:

Let’s look at an example code and its display:

<meta http-equiv="Content-Type" content="text/html; charset=gb2312"><title>Untitled Document</title><style type="text/css">h1{color:#0000FF;font-size:40px;}</style><h1 id="CSS">CSS</h1>