HTML

HTML

Hypertext Markup Language - markup language that web browsers use to interpret and compose text, images, and other material into web pages.

.htm or .html

File extension for an HTML file.

Tim Berners-Lee

In 1989, he wrote a memo proposing an Internet-based hypertext system and specified HTML.

HTML Tags

Elements that comprise the most part of HTML and are defined by a starting tag and end with a closing tag.

Attributes

Provide additional information about an element.

href Attribute

Specifies the link address for HTML links.

src Attribute

Specifies the filename for HTML images.

width and height

Attributes that specify the dimensions of an image in pixels.

alt Attribute

Specifies alternative text to be used if an image cannot be displayed.

style Attribute

Specifies the styling of an element, such as color, font, size, etc.

lang Attribute

Declares the language of the HTML document.

title Attribute

Displays a tooltip when you mouse over the element.

body

Where all other elements are placed and displayed.

head

Where metadata is encoded.

Metadata

Data about data, typically used to specify page description, keywords, author, last modified, etc.

Sandwich Structure

HTML structure where elements can be nested inside other elements.

HTML5

The latest version of HTML, published in 2014, with new tags and features.

New Tags in HTML5

section, header, footer, nav, article, aside, figure.

New Inline Elements in HTML5

mark, time, meter, progress.

New Dynamic Pages Support in HTML5

Context menus, href, async attribute, details, datagrid, menu, command.

New Form Types in HTML5

datetime, datetime-local, date, month, week, time, number, range, email, url.

New Elements in HTML5

canvas, video, audio.

CSS

Cascading Style Sheet - language that describes the style of an HTML document.

Two Parts in CSS

Selector and Declaration.

Two Parts in Declaration

Property and Value.

Three Types of Attaching CSS

Inline Style, Embedding Style, External Style.