hover is a pseudo-class in CSS that applies styles when the mouse hovers over an element. Its function is to: change the appearance of the element (such as color, background color); provide visual feedback when hovering, Indicates that elements can be interacted with (e.g. links, buttons); shows hidden options (e.g. drop-down menus); enlarges or displays picture titles (e.g. images).
hover
Meaning in CSS
hover
is A pseudo-class in CSS that specifies a style to be applied when the user hovers over a specific element. When the user moves the mouse pointer over an element with the hover
pseudo-class, the browser will apply the specified style.
How to use
To use the hover
pseudo-class, add the following syntax to the element's CSS rules:
<code>元素:hover { 样式声明; }</code>
For example, to change the paragraph text to red on hover, you can use the following CSS:
<code>p:hover { color: red; }</code>
effect
hover
Pseudo class usually Used to provide visual feedback that the user can interact with the element. Common applications include:
- Links: Change link color to blue and add underline on hover.
- Button: Change button color or background color on hover.
- Image: Show image title or enlarge image on hover.
- Dropdown menu: Show hidden options on hover.
Note
The following points need to be noted:
-
hover
Pseudo-classes will not affect elements actual behavior. It only applies visual styles. The -
hover
pseudo-class can be combined with other pseudo-classes, such as:active
,:focus
, and:visited
. - Different browsers may interpret
hover
pseudo-classes slightly differently. Make sure to test your styles in all supported browsers.
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