What does the dot mean in CSS?

Question

Can someone explain the difference for these two CSS selectors?

.work-container . h3 {
font-size: 14px;
margin-top: 0px;
font-weight: 600;
height: 27px;
} 
<         


        

Answer 1

. says its class

# means its an id

and if there is nothing but the selector, then it is a tag