css02 CSS Syntax 语法 句法

https://www.w3schools.com/css/css_syntax.asp

A CSS rule consists of a selector and a declaration block.

 

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CSS Syntax

The selector points to the HTML element you want to style.

The declaration block contains one or more declarations separated by semicolons.

Each declaration includes a CSS property name and a value, separated by a colon.

Multiple CSS declarations are separated with semicolons, and declaration blocks are surrounded by curly braces.

Example

In this example all <p> elements will be center-aligned, with a red text color:

p {
  color: red;
  text-align: center;
}

Example Explained

• p is a selector in CSS (it points to the HTML element you want to style: <p>).
• color is a property, and red is the property value
• text-align is a property, and center is the property value

You will learn much more about CSS selectors and CSS properties in the next chapters!