1:列表图片盒子 渐变文字背景 background: linear-gradient(transparent, rgba(0, 0, 0, 0.6));
1:https://www.jianshu.com/p/340c7abbc6c0 2:http://www.360doc.com/content/17/0707/15/45170253_669596908.shtml
1:https://juejin.im/post/5d48f3b7e51d4561e224a2c8
1:https://www.cnblogs.com/feiyu159/p/8666865.html
1:https://www.bilibili.com/video/av36353273/?p=3
1:https://cloud.tencent.com/developer/article/1450181
1:https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/Array/shift
1:https://developer.mozilla.org/zh-CN/docs/Web
1:http://sc.chinaz.com/tag_yinxiao/TiShi_3.html
1:https://qishaoxuan.github.io/css_tricks/shadow/#常见投影
1:https://www.liaoxuefeng.com/wiki/1022910821149312/1023025830950720