What are the new features of css3

The new features of css3 include CSS selectors, box models, rounded corners and shadows, gradients, transitions and animations, media queries, flexible box layout, multi-column layout, etc. Detailed introduction: 1. CSS selectors: CSS3 introduces some new selectors, such as attribute selectors, pseudo-class selectors and pseudo-element selectors, making the selection of elements more flexible and precise; 2. Box model: introduced in CSS3 The new box model allows you to control the size calculation method of the box through the box-sizing attribute, including content-box and so on.

Operating system for this tutorial: Windows 10 system, Dell G3 computer.

CSS3 is the third version of CSS (Cascading Style Sheets), which introduces many new features and functions to enhance control over the style and layout of web pages. The following are some new features in CSS3:

1. CSS selectors: CSS3 introduces some new selectors, such as attribute selectors (Attribute Selectors), pseudo-class selectors (Pseudo- class Selectors) and pseudo-element selectors (Pseudo-element Selectors), making selecting elements more flexible and precise.

2. Box model: A new box model is introduced in CSS3, allowing the box-sizing attribute to be used to control the size calculation method of the box, including content-box, border-box and padding-box wait.

3. Rounded corners and shadows: CSS3 provides the border-radius property to easily create a rounded corner effect on elements. At the same time, the box-shadow attribute is also introduced, which can add shadow effects to elements.

4. Gradient: CSS3 supports the use of linear-gradient and radial-gradient properties to create linear and radial gradient background effects.

5. Transition and animation: CSS3 introduced the transition and animation properties, making it possible to create smooth transition effects and animation effects between the states of elements.

6. Media Queries: Media Queries in CSS3 allow you to apply different styles according to different media types and device characteristics to achieve responsive design.

7. Flexbox Layout: Flexbox Layout was introduced in CSS3. Through display: flex and related attributes, you can easily create flexible and adaptive layouts.

8. Multi-column layout: Multi-column layout (Multicolumn Layout) in CSS3 allows content to be divided into multiple columns, and the number and number of columns can be controlled through attributes such as column-count and column-width. column width.

In addition to the features listed above, CSS3 also includes more new features, such as Transformations, Filters, Font Styles, and media playback controls. (Media Controls), etc. These features provide more style and layout options, making web design richer and more creative.

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