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How to enable theming with css variables [ example ]?


Asked by Maia Hawkins on Dec 15, 2021 CSS



Enable theming with CSS variables is extremely simple and straightforward, with the following steps: Define a set of global CSS variables in :root, including one set of color for background and font used in dark mode, one set for light mode, and theme variables. Our theme variables are custom properties whose names have the --page- prefix.
Consequently,
Because there’s no need for compilation, the values of CSS variables can be changed on-the-fly, and the browser can interpret the changes immediately. Using variables for theming ensures consistency and reduces code repetition. The whole theme becomes easier to maintain as the values are defined once and referenced throughout the code.
Similarly, Well, it really isn’t that difficult. A common way to build switchable themes using CSS variables is to: Build the page layout and default theme as usual. Switch the “skinnable” components to use CSS variables. For example, the font and background colors. Lastly, use Javascript to change the CSS variables and theme.
And,
Variables in CSS should be declared within a CSS selector that defines its scope. For a global scope you can use either the :root or the body selector. The variable name must begin with two dashes (--) and is case sensitive! The syntax of the var() function is as follows:
Also,
It could be as simple as changing colors and backgrounds or font-sizes and icons. In CSS, we can achieve theming by piecing together various CSS variables (props) in a context (e.g, black and white) to enable better presentation of an application.