Site Title, how to disable capitals?

how to disable under “Configuration - Site/Site Title” that my input will change by default into capitals?
I am new. Is it depending from theme? I use Antimatter.

Which one?

  • if in css, use can use: text-transform
  • if in twig, you can use “|captilaze” extension

Sorry for not clear explanation. Is it not possible via admin panel (/config/site.yaml)?
Under “Configuration - Site/Site Title” the title will be displayed on the website by default with capitals. Like “MYTITLE”. I can’t change it.
I want to have case-sensitive. Like “MyTitle”. Thank you.