Instruction: Define a pseudo-class in CSS and provide examples of its use.
Context: This question evaluates the candidate's knowledge of pseudo-classes in CSS, which are used to define special states of elements.
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For example, one of the most commonly used pseudo-classes is :hover. This pseudo-class allows us to change the style of an element when a user hovers their mouse over it. In the context of UI/UX design, this can be crucial for improving user engagement and making the interface intuitive. By changing the color, background, or even the font size of a button when hovered, we can signal to users that the element is interactive, thereby improving the overall user experience.
Another pivotal pseudo-class is :focus, which is incredibly useful for accessibility and usability. When an element, such as an input field, is in...
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