In HTML, element is the set of metadata (metadata) placed in the tag and card . HTML metadata is data about HTML documents and is not displayed.

Metadata often defines text titles, character sets, styles, paths, scripts, and other information. Below are the metadata description tags ,

Element in HTML

Element used to link to external Style Sheets.

Element in HTML

Element define the character set used, page description, keywords, author and other metadata information. Metadata is used by the browser to display content, search engines used to display keywords and other web services.

Definition of character set

Site description

Keywords for search sets

Author of the page

Reload the document file after 30 seconds

Set viewport

HTML5 introduced a way for web designers to control viewport via tags . Viewport is the area that users see on the site. This area is small and small depending on the device, the phone will be smaller on the computer.

You should include the viewport element go to all of its websites.

Viewport element Instructions for the browser how to control the size of the page.

width = device-width sets the width for the page according to the width of the screen (depending on the device)
initial-scale = 1.0 sets the initial zoom level when the page is first loaded in the browser

This is an example of a page that is used (on the right) and does not use the viewport (left) on the tag .

Head element in HTML Picture 1
Viewport helps set the page width

Element

Element in HTML

Element specify the basic URL and the basic destination for all relative URLs on the page.

Can quit, and no?

According to HTML5 standards, tags can be removed , and but the code is still valid.

 Tiêu đề trang 
 

Title

Paragraph.

However, do not remove the card and because it may cause the DOM or XML software to crash or get errors on older browsers (like IE9). Removing the card then quite often.

Previous article: File path in HTML

The following article: Layout in HTML