Custom Properties
TODO mirar: https://www.youtube.com/watch?v=ZuZizqDF4q8
https://frontendmasters.com/courses/css-variables/
https://developer.mozilla.org/en-US/docs/Web/CSS/--*
Define custom properties
https://developer.mozilla.org/en-US/docs/Web/API/CSS_Properties_and_Values_API
@property
https://developer.mozilla.org/en-US/docs/Web/CSS/@property
CSS.registerProperty
https://developer.mozilla.org/en-US/docs/Web/API/CSS/registerProperty_static
rgb()
:root {
--accent: 124, 58, 237;
}
html {
background-color: rgb(var(--accent));
}