Css pseudo-classes
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Pseudo-classes are used to define special states of CSS elements. They allow styling elements when a user mouses over, focuses on, visits, or activates them. Common pseudo-classes include :hover, :focus, :visited, and :active. Pseudo-classes can be used with CSS classes and selectors like :first-child to style specific elements, such as styling the first <p> element or changing the color of a link on hover. Pseudo-elements like ::before and ::after allow inserting content before or after elements.
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Css pseudo-classes
- 1. CSS – Cascading Style Sheet Pseudo-classes
- 2. What are Pseudo Classes A pseudo-class is used to define a special state of an element. For example, it can be used to: • Style an element when a user mouses over it • Style visited and unvisited links differently • Style an element when it gets focus
- 3. Syntax of Pseudo-Classes selector:pseudo-class { property:value; }
- 4. Anchor Pseudo-classes Links can be displayed in different ways: /* unvisited link */ a:link { color: #FF0000; } /* visited link */ a:visited { color: #00FF00; } /* mouse over link */ a:hover { color: #FF00FF; } /* selected link */ a:active { color: #0000FF; }
- 5. Pseudo-classes and CSS Classes • Pseudo-classes can be combined with CSS classes: • When you hover over the link in the example, it will change color: a.highlight:hover { color: #ff0000; }
- 6. Hover on <div> • An example of using the :hover pseudo-class on a <div> element: div:hover { background-color: #f00; }
- 7. CSS - The :first-child Pseudo- class • The :first-child pseudo-class matches a specified element that is the first child of another element. li:first-child { color: blue; }
- 8. All CSS Pseudo Classes Selector Example Description :active a:active Selects the active link :checked input:checked Selects every checked <input> element :disabled input:disabled Selects every disabled <input> element :hover a:hover Selects links on mouse over :first-child p:first-child Selects every <p> elements that is the first child of its parent :focus input:focus Selects the <input> element that has focus :last-child p:last-child Selects every <p> elements that is the last child of its parent
- 9. All CSS Pseudo Elements Selector Example Description ::after p::after Insert content after every <p> element. ::before p::before Insert content before every <p> element ::first-letter p::first-letter Selects the first letter of every <p> element ::first-line p::first-line Selects the first line of every <p> element ::selection p::selection Selects the portion of an element that is selected by a user