Cover

Cover provides a degree of protection to a target behind it. There are three degrees of cover, each of which provides a different benefit to a target:

A target with half cover has a +2 bonus to AC and Dexterity saving throws.

A target with three-quarters cover has a +5 bonus to AC and Dexterity saving throws.

A target with total cover can't be targeted directly.

If behind more than one degree of cover, a target benefits only from the most protective degree. See also Combat.