CSS3 knowledge summary: detailed explanation
1. Understanding CSS3 1. CSS3 Overview CSS3 is an upgraded version of CSS2. It adds many powerful new features based on CSS2 to solve some practical problems. CSS3 will develop in a modular way in the future: CSS current work & how to participate The new features of CSS3 are as follows: More practical selectors have been added , such as dynamic pseudo-class selector, target pseudo-class selector, pseudo-element selector, etc. Added better visual effects , such as rounded corners, shadows, gradients, etc. A variety of background effects have been added , such as support for multiple background images, and several background-related properties have been added. A new layout scheme has been added - Flexible Box. Added Web Fonts , which can display fonts that are not installed on the user's computer. Enhanced colors , such as: HSL, HSLA, RGBA, several new color modes, and added opacity property to control transparency. Added 2D and 3D transformations , such as rotation, distortion, ...