<env>

A function that allows you to use environment variables defined by the browser, most commonly used to handle 'safe areas' on devices with notches or rounded corners.

/* Usage Example */
.container {
  /* Adds padding to avoid the 'notch' on mobile devices */
  padding-top: env(safe-area-inset-top);
}
Widely available Since 2020 95% global usage

This feature is well established and works across many devices and browser versions. It has been available across browsers since 2020.

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