Button at the center and bottom of div

Question

How to make a button be at the bottom of div and at the center of it at the same time?

Answer 1

One way of doing this would be to give it an absolute width and then a margin half of that:

width: 250px;
margin-left: -125px;

Another way would be to give the div the following line-height and remove all styles from the button:

line-height: 398px;