What type of selector is used to target specific elements within a grid in CSS?

Using a class selector allows you to target specific elements within a grid in CSS effectively. Class selectors are denoted by a period (.) followed by the class name and enable you to apply styles to multiple elements that share the same class. This is particularly useful in grid layouts where you might want to apply certain styles to a group of elements collectively, such as adjusting their width, padding, or margin to achieve a cohesive design.

In contrast, element selectors target all instances of a specific HTML element, limiting styling to those elements universally rather than a select group. ID selectors, while able to target a unique element with a specific identifier, are less flexible when styling multiple elements that need similar styling in a grid. The universal selector targets all elements but does not allow for specificity, which may not provide the desired control over individual element styles in a grid format. Thus, the choice of a class selector is optimal for tailoring styles to specific elements within a grid structure.