1.css参考手册
http://www.css88.com/book/css/properties/media-queries/height.htm
2.HTML Tricks
https://www.html5tricks.com/html5-canvas-circle-percentage.html
3.jquery之家
http://www.htmleaf.com/html5/html5-canvas/201705154511.html
4.博客
1）弹性盒子模型
http://www.ruanyifeng.com/blog/2015/07/flex-grammar.html
https://blog.csdn.net/mr_lp/article/details/50966842
https://www.ibm.com/developerworks/cn/web/1409_chengfu_css3flexbox/(特效)
https://www.w3.org/TR/css-flexbox-1/#flex-flow-property来自(W3C)
大漠：http://www.w3cplus.com/css3/flexboxgeng-jia-you-ya-de-webbu-ju.html
骰子：https://codepen.io/LandonSchropp/pen/KpzzGo
2)张鑫旭博客：https://www.zhangxinxu.com/
5.MDN Web docs
https://developer.mozilla.org/zh-CN/docs/Web/CSS/object-fit
转载于:https://www.cnblogs.com/huanghuali/p/9602535.html
