How do I vertically align something inside a span tag?

Question

How do I get the \"x\" to be vertically-aligned in the middle of the span?

.foo {
    height: 50px;
    border: solid black 1px;
    display: inline-block;
          


        

Answer 1

The flexbox way:

.foo {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 50px;
}