This css file uses css variables to give you access to pleasing colors. As opposed to regular css colors, where if you type 'red' you will see a disgusting color, with this file you will get a nice looking red.
You can access these colors by typing, for example: background-color: var(--red)
It contains a color for every normal name color, as well as light and dark version, for example, type --light-red
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Bri'ish support is included