Center text vertically

index.html

<div>
  <span>Lorem ipsum dolor sit amet, consectetur adipiscing elit.</span>
</div>

style.css

div {
  width: 250px;
  height: 100px;
  line-height: 100px;
  text-align: center;
  border: 1px solid #123456;
}

span {
  display: inline-block;
  vertical-align: middle;  
  line-height: normal;
}