Inject custom css style to Input component

[ReactNextTest]

I am trying to build a registration Form using Input component from react-advanced-form-addons.

Can able to build fundamental registration page with all the required validation.

But finally stuck with Injecting custom css/style to Input component (bold and font color), since it involve styled component which create style dynamically, unable to set my own style in the production mode, ie NODE_ENV='production', ex. display:block, but which works fine in NODE_ENV='development'.

And also since it generates

tag for validation error, don't have freedom to set/apply my won style.

Please let me know how to add custom css/styles to or

components.

If there is no solution I have move to other solution. help me out to resolve the issue.