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This article mainly introduces the relevant knowledge of "what are the common basic selectors of css". The editor shows you the operation process through actual cases, the method of operation is simple and fast, and it is practical. I hope this article "what are the common basic selectors of css" can help you solve the problem.

One: what is a css selector?

CSS is a language used to render html,xml on the screen. CSS mainly applies styles to the corresponding elements to render the relatively applied elements, so it is very important for us to select the corresponding elements. How to select the corresponding elements requires what we call a selector. In CSS, a selector is a pattern for selecting elements to which styles need to be added. The selector is mainly used to determine the DOM element nodes in the tree structure of html.

Two: five common basic selectors in css3

There are many kinds of selectors in css3. Here are five common basic selectors: wildcard selector, class selector, element selector, ID selector, and group selector.

1. Wildcard selector (supported by all browsers)

The universal selector is represented by * to select all elements, or you can select all elements under an element

* {marigin:0

Padding:0

Font-size:14px

}

You must have seen a lot of the above code in the reset style file. What he means is that the margin and padding of all elements are set to 0, the font size is set to 14px, and the other is to select all elements under an element:

Wildcard selector

.demo * {

Width:50px

Height:50px

Border:1pxsolidblue

Margin:10px

}

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This is the end of the introduction to "what are the common basic selectors for css". Thank you for reading. If you want to know more about the industry, you can follow the industry information channel. The editor will update different knowledge points for you every day.

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