How does CSS specificity work?

Explanation:

CSS specificity determines which style rules apply to an element when there are conflicting rules. It assigns weight to different types of selectors to determine precedence. The more specific a selector, the higher its priority.

Key Talking Points:

• CSS specificity is calculated based on the types of selectors used.
• Specificity is determined by counting each type of selector in a rule.
• The order from highest to lowest specificity is: inline styles, IDs, classes/attributes/pseudo-classes, and elements/pseudo-elements.
• When selectors have the same specificity, the last one defined takes precedence.

NOTES:

Reference Table:

Pseudocode:

Although this question typically doesn't require a code snippet, here's an example showcasing specificity:

   /* Specificity: 0001 */
   p {
       color: blue;
   }

   /* Specificity: 0010 */
   .text {
       color: green;
   }

   /* Specificity: 0100 */
   #unique {
       color: red;
   }

   /* Specificity: 1000 */
   <p style="color: orange;">This is a paragraph.</p>

In this example, the inline style will take precedence and the paragraph will be orange.

Follow-Up Questions and Answers:

• Question: How can you increase the specificity of a selector?

  • Answer: You can increase specificity by adding more specific selectors. For example, using an ID selector or combining multiple classes can increase specificity.

• Question: What happens when two selectors have the same specificity?

  • Answer: When two selectors have the same specificity, the one that appears later in the CSS file will take precedence.

• Question: How do !important declarations affect specificity?

  • Answer: The !important declaration overrides normal specificity rules, giving the declaration the highest priority. However, if multiple !important rules apply, the one with the higher specificity still takes precedence.