CSS code introduction and Basic Selector

Introduction

CSS features: render layouts for HTML elements

1. Find the Label element

2. Action label (plus CSS properties)

Consists of two main components: selectors, and multiple declarations

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How CSS code is introduced

One, inline (does not involve lookup, with HTML binding, difficult to maintain)

<p style= "color:red;font-size:24px" >hello world</p>

Second, embedded: Head tag embedded style tag

Selector Selector

Tag Selector

ID selector highest Priority #

Class selector.

Universal Selector *

Selector priority

Combo Selector

Third, file-linked (project selection)

Add link tag link to separate CSS file in head tag

<link rel= "stylesheet" href= "Index.css" >

CSS code introduction and Basic Selector