How Can You Create Variables in CSS for Internal Use?

Creating Variables in CSS for Internal Use

In the realm of CSS, the ability to reuse common values, or "theme colors," has been a long-standing challenge. While there is no inherent mechanism in CSS for defining variables within a single stylesheet, there are clever ways to achieve this functionality.

One technique involves flipping the traditional approach of applying specific styles to individual elements. Instead, group the styles applied to conceptually similar elements. For example:

<code class="css">/* Theme color: text */
H1, P, TABLE, UL {
  color: blue;
}

/* Theme color: emphasis */
B, I, STRONG, EM {
  color: #00006F;
}</code>

This ensures that the same color is applied to all text elements and all emphasized elements.

It's important to note that conceptual grouping is paramount. Values may be identical in specific instances, but they may not always remain so in the future. Focus on the underlying meaning of styles to avoid potential errors when making changes down the road.

While not a true variable system, this strategy effectively reduces repetition and allows for concise and maintainable CSS code.

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