Web Coding Center
HTML
Structural Elements
Declaration
Head
Sectioning
iframe
Shadow DOM
Text Elements
Hyperlink
Formatting
Orientation
Indications
Figure Elements
List
Progress and Meter
Table
Image
Multimedia
Form Elements
Form and Input Controls
Generic <input>
<output>
Security
…...crossorigin (CORS)
…...integrity
…...referrerpolicy
…...nonce
Content Security Policy
Feature Policy
Special References
Global Attributes
DOCTYPE
Characters
Diacritical Marks
Language
URL Encoding
MIME Types
Media Query
HTTP request methods
HTTP request headers
HTTP Response Headers
Miscellaneous Techniques
Favicon
Google Map
Code Compression
Validation
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Special References