How to set up active controls in CSS
This article mainly introduces the CSS how to set active control related knowledge, the content is detailed and easy to understand, the operation is simple and fast, has a certain reference value, I believe that everyone after reading this CSS how to set active control article will have a harvest, let's take a look.
Let's first look at the grammatical format:
: focus {
(style description)
}
Describe it by specifying elements, classes, and ID, as follows:
When setting a specific label
(signature): focus {
(style description)
}
When setting up a specific class
. (class name): focus {
(style description)
}
When setting up a specific ID
# (id name): focus {
(style description)
}
Code example:
Write the following code.
FocusSelector.css
Input {
Background-color:#D0D0D0
}
Input:focus {
Background-color:#FFD0D0
}
Description:
Because "input" is described, the style of the INPUT tag is defined and the background color is specified as gray (# D0D0D0). The definition of a normal INPUT is
Input {background-color:#D0D0D0;}
Receives and activates the style definition for focus, and the background color is specified as pink (# FFD0D0).
Input:focus {background-color:#FFD0D0;}
FocusSelector.html
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