Forms, Box Model (again), letter spacing, Pseudo-classes, 'hover'

HTML FORMS

http://www.w3schools.com/html/html_forms.asp

A form is an area that can contain form elements.

Form elements are elements that allow the user to enter information (like text fields, textarea fields, drop-down menus, radio buttons, checkboxes, etc.) in a form.

A form is defined with the

tag.

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The CSS Box Model

http://www.w3schools.com/css/css_boxmodel.asp

All HTML elements can be considered as boxes. In CSS, the term "box model" is used when talking about design and layout.

The CSS box model is essentially a box that wraps around HTML elements, and it consists of: margins, borders, padding, and the actual content.

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CSS letter-spacing Property - it increases or decreases the space between characters in a text.

http://www.w3schools.com/css/pr_text_letter-spacing.asp

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PSEUDO-CLASSES

CSS pseudo-classes are used to add special effects to some selectors.

http://www.w3schools.com/css/css_pseudo_classes.asp

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CSS :hover pseudo-class

http://www.w3schools.com/css/pr_pseudo_hover.asp

The :hover pseudo-class adds a special style to an element when you mouse over it. Active, visited, unvisited, or when you mouse over a link, can all be displayed in different ways.