What are the new pseudo-classes in css3?

css3 pseudo-classes: ":first-of-type", ":last-of-type", ":only-of-type", ":only-child", ":nth-child( 2)", ":enabled", ":disabled", ":checked".

The operating environment of this tutorial: Windows 7 system, CSS3 version, Dell G3 computer.

Some new pseudo-classes in css3:

• ##:first-of-type

  :The first-of-type selector matches every element that is the first child of a specific type from its parent element.

• :last-of-type

  :last-of-type selector matches the last child of a specific type that belongs to its parent element for each element of the element.

• :only-of-type

  :only-of-type selector matches the only child element of a specific type that belongs to its parent element of each element.

• :only-child

  :only-child selector matches every element that is the only child element of its parent element.

• :nth-child(2)

  :nth-child(n) selector matches the Nth child element that belongs to its parent element , regardless of the type of element.
  n can be a number, keyword or formula.

• :enabled and :disabled

  The disabled state of the form control.

• :checked

  :checked The selector matches every checked input element (applies only to radio buttons or checkboxes).

(Learning video sharing:

css video tutorial)

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