Based on HTML, HTML Basics

Based on HTML, HTML Basics
Knowledge Point 1: HTML

Hyper Text Markup Language
Hypertext markup language.
Standard HTML structure:

<! Doctype html> Declaration Document Type 
Suffix: Html is the same as htm,
The extension name cannot determine the file format, but can only determine how the file is opened.
HTML Tag classification:

Single Tag: <! Doctype html> dual tags: 
Basic Tag:
Single Tag: Comment Tag: <! -- Commented content --> line feed label: <br/> horizontal line label: <P> today is the first day of formal learning. </P>

Title label 
Image Tag:  src: Source of the image. Alt: The text displayed when the image cannot be displayed. Title: Text displayed when you move your mouse over it. Width: width. Height: height. Note: When the width and height attributes are not written, the image is displayed in, and only scaled proportionally when the image is written.
Knowledge Point 2:
Path:
Relative Path: the path relative to the file. If/is used in the current directory, it can be obtained. If it is used in the upper-level directory of the current directory ...
Hyperlink: <a href = ''title ='' target = ''> hyperlink name </a> href: URL of the jump page. Title: Text displayed. Place the cursor over the displayed text. Target = '_ self' default value. Close the page and open the connection page. Target = '_ blank' when the new page is opened, the old page is not closed.
Anchor: it is a kind of conceptual thing, and it is not actually a tag:
1. first define an anchor: '<p id = 'maodian'> </p> '2. use a hyperlink to jump back to the anchor: '<a href =' # maodian '> hyperlink </a>' note' # maodian 'is an Id selector of the css selector, which will be learned later.
Empty chain:
<A href = '#'> </a> redirects to the optimized format of the page hyperlink. 'Add the following to 
Here are special characters:
Knowledge Point 3: List
1. Unordered list:

    

 
     
Unordered list item 1
 
     
Unordered list item 2
 
     
Unordered list item 3

    
<Ul> <li> unordered list item 1 </li> <li> unordered list item 2 </li> <li> unordered list item 3 </li> </ul>
2. Ordered list:
<Ol> <li> ordered tag 1 </li> <li> ordered tag 2 </li> <li> ordered list 3 </li> <ol>
Attribute type start
Type: 1, a, A, I, I
Start: determines the start position. The values are Arabic numerals 1, 2, and 3.
3. Custom list:
This is the title
Explanation Title 1
Explanation Title 2
<Dl> <dt> This is a subtitle </dt> <dd> Title 1 </dd> <dd> Title 2 </dd> </dl>
Knowledge Point 4:
Miscellaneous:
1. Music Tag:
<embed src='' hidden='true'>
2. Scroll: