You want to be the best, you MUST put the long yards in! Nothing comes easy in life so stop wishing and start DOING! So many people would rather bitch and moan than help themselves. Dont be one of those negative drainers, start today, make a small change and keep going forwards with this attitude!
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env()

The env() CSS function can be used to insert the value of a user agent-defined environment variable into your CSS, in a similar fashion to the var() function and custom properties. The difference is that, as well as being user-agent defined rather than user-defined, environment variables are globally scoped to a document, whereas custom properties are scoped to the element(s) on which they are declared.
env() css reference