how to change css of ootb widget used in custom widget

[Akki1]

Hi,

Ootb data table widget is called in new custom widget.

But the fields shown there are somewhat not in line .

Eg There is field short description so it is like

If you see testing is after some space but instance is from starting so it is looking distorted. 

I know there is one line in the css .sp-lst-cell{  white-space: pre-wrap;   } so if remove this line it will work but how to do this?

Short description

Testing Instance

[dave_greene]

You can use the widget editor to edit the css

[Akki1]

@dave.greene But I hv directly used it in my custom widget