I'm getting starting 'antd' which is a react ui library, with my react project.
The problem was to change the background color of antd's Header component. (white -> red)
The first thing I tried was to give a new className to the Header component and change the background color.
But it didn't work.
The next thing I tried was to override the style using the className set by antd.
It didn't work either.
How can I change the style of this Header component?
I am not using the css methodology such as styled-components or css-module, and I do not want to use the 'important!' property, or inline styling.