适合初学者以及没看过css3的人快速了解css3的主要内容。
1.opacity ----------------------取值0-1之间，给整个元素和其所有子元素设置透明度级别
2.css选择器---------------------- http://www.w3school.com.cn/cssref/css_selectors.asp
其中li:nth-child(2n+1)表示选择基数个(可以类推) input:not([type="submit"]) 可以做否定的选择 3.html5兼容浏览器老版本对标签不识别问题
Ranking of the top ten digital currency exchanges
The difference and connection between java and javascript
How to create html with webstorm
Computer application areas
fil currency price real-time price
Data storage encryption methods
How to write triangle in css
Which laptop battery testing software is best?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
