Final answer:
CSS selectors have a specific order of priority, with id selectors having the highest priority, followed by class selectors, and finally tag selectors.
Step-by-step explanation:
The rank of CSS selectors from highest priority to lowest priority is as follows:
- Select by id name - This has the highest specificity and is therefore the most powerful.
- Select by class name - This is less specific than an id, but more specific than tag names.
- Select by tag name - This has the lowest specificity among the selector types mentioned here.
Note that the order is not arbitrary; it is part of CSS specificity rules which browsers follow to determine which styles to apply when there is a conflict. Specificity is a crucial concept in CSS that helps to ensure that the most relevant styles are applied to an element.