Study 1--HTML5 Overview

HTML5 Overview
HTML is a Hypertext Markup language that is used primarily to describe how content is displayed in Hyper-text. The markup language is interpreted and compiled by the browser, although it cannot be displayed in the browser itself, but the content of the HTML tag can be displayed correctly in the browser. 
HTML5 is a descriptive markup language that describes the content and structure of hypertext. 

the Web is a collection of standards. 
The Web page consists mainly of three parts: structure, performance and behavior

Advantages of Web standards:
1. For visitors
① File download and page display faster
② content can be accessed by more users
③ content can be accessed by a wider range of users
④ users to customize the presentation interface with style selection
⑤ All pages provide a suitable version for printing

2. For site owners
① Less code and components for easy maintenance
② bandwidth requirements, lower cost
③ is more likely to be searched by search engines
④ revision convenience, do not need to change the content of the page
⑤ to provide a print version without copying content
⑥ Improve usability of your website

Common special characters

Show	Description	HTML encoding
	A large half-width blank	 
	Full-width Large blank	 
	A blank grid that keeps on line	 
<		&lt;
>	Greater than	&gt;
&	& Symbols	&amp;
"	Double quotes	&quot;
?	Copyright	&copy;
?	Registered trademarks	&reg;
Tm	Trademark (USA)	& #8482;
*	Multiplication sign	&times;
÷	Division Sign	&divide;

<p>x<sup style= "color:red;" >2</sup>+2=6<br/>h<sub style= "color:red;" >2</sub>+O--> h<sub style= "color:red;" >2</sub>O</p>

Study 1--HTML5 Overview