Solved By CSS: Donuts Scopes | CSS-Tricks
Briefly

"We need a way of saying, not only where scope starts, but where it ends. Thus, the scope donut." In discussing donut scoping, Nicole Sullivan accurately identified the necessity for a defined CSS boundary between parent and content, urging developers to manage how styles from parent components can affect child components effectively.
"Even if donut scoping is an ancient issue in web years... it seems like donut scopes stayed at the back of our minds as just another headache of the ol' CSS global scope until @scope." This illustrates how a longstanding problem like donut scoping remained unresolved until the introduction of the @scope at-rule, which finally offers a practical solution.
"If we change the .parent color, then so does the color inside .content. How can we stop this from happening?" This highlights a common challenge developers face when managing CSS styles, particularly with nested components, emphasizing the importance of isolating styles to maintain intended designs.
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