Layout Options

  • Fixed Header
    Makes the header top fixed, always visible!
  • Fixed Sidebar
    Makes the sidebar left fixed, always visible!
Html Doctype
Navigation menus are one of the basic building blocks for any web or mobile app.

<!DOCTYPE> Declaration

The Document Type Declaration (DTD) specifies the rules for the markup language, so that browsers can render the content correctly.

Note: The doctype declaration should be the very first line in an HTML document.

The doctype declaration for HTML5 has the form:

<!DOCTYPE root-element>
Element Description
root-element The root element of an HTML document is <html> which is the first element opened and last element closed

HTML5

Contains all HTML5 elements and attributes. There is no need to specify a reference to a DTD.

<!DOCTYPE html>

Older Doctypes

HTML 2.0

This doctype is widely supported by browsers but lacks support for most commonly used presentational elements and attributes, tables, frames, and internationalization.

<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML//EN">

HTML 3.2

This doctype is supported by most browsers but has limited support for style sheets and no support for HTML4 features such as frames and internationalization.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN">

HTML4.x

The doctype declarations for HTML4.x have the form:

<!DOCTYPE root-element PUBLIC "FPI" ["URI"]>

or

<!DOCTYPE root-element SYSTEM ["URI"]>
Element Description
root-element The root element of an HTML document is <html> which is the first element opened and last element closed
PUBLIC Indicates a public DTD
SYSTEM Indicates a private DTD
FPI A Formal Public Identifier used to uniquely identify the specification.
URI The Uniform Resource Identifier of the DTD

For HTML4.x, there are three HTML DTDs:

  • Strict
  • Transitional
  • Frameset

HTML4.01 Strict

Contains all HTML elements and attributes, but DOES NOT include presentational or deprecated elements. Framesets are not allowed.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">

HTML4.01 Transitional

Contains all HTML elements and attributes, INCLUDING presentational and deprecated elements. Framesets are not allowed.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">

HTML4.01 Frameset

Same as HTML4.01 Transitional, but allows frameset content.

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML4.01 Frameset//EN" "http://www.w3.org/TR/html4/frameset.dtd">

Browser Support

Chrome Firefox IE Safari Opera
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