table 固定列的样式效果

[zhaopeiym]

Reproduction link

https://stackblitz.com/edit/angular-cpsrxm?file=src/app/app.component.ts

Steps to reproduce

打开 https://stackblitz.com/edit/angular-cpsrxm?file=src/app/app.component.ts 即可

What is expected?

应该有固定列的阴影效果

What is actually happening?

没有固定列的阴影效果

Environment	Info
ng-zorro-antd	8.3.1
Browser	谷歌

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如果是静态数据，进去有固定列的阴影效果。
如果是异步请求的数据，初始没有固定列的阴影效果，需要把滚动条左右移动才会出现。

[zorro-bot]

Translation of this issue:

Fixed column table style effects

Reproduction link

[Https://stackblitz.com/edit/angular-cpsrxm?file=src/app/app.component.ts](https://stackblitz.com/edit/angular-cpsrxm?file=src/app/app. component.ts)

Steps to reproduce

Open to https://stackblitz.com/edit/angular-cpsrxm?file=src/app/app.component.ts

What is expected?

There should be a fixed column shadow effect

What is actually happening?

No shadow effect fixed columns

Environment	Info
Ng-zorro-antd	8.3.1
Browser	Google

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If the data is static, into a shadow effect fixed columns.
If asynchronous data is requested, there is no shadow effect initial fixed columns, the need to move a scroll bar appears around.
  
! [QQ screenshots 20191006163409] (https://user-images.githubusercontent.com/5820324/66266409-45a8cd00-e857-11e9-8224-b5cf00e7303a.png)
! [QQ screenshots 20191006163425] (https://user-images.githubusercontent.com/5820324/66266408-42154600-e857-11e9-9b92-f9ab88a4b75c.png)