Question

I have a responsive element where its width and height will both scale. Inside this I have some text which I want to center vertically.

How can I set the text’s line-height to be the same as its parent if I don’t know the parent’s height?

line-height: 100% is relative to the font’s regular height so this doesn’t help…

Answer 1

Here’s another way to center an element vertically. I came across this technique some time ago. Basically it uses a pseudo element and vertical-align: middle.

.block::before {
  content: '';
  display: inline-block;
  height: 100%;
  vertical-align: middle;
  margin-right: -0.25em; /* Adjusts for spacing */
}

/* The element to be centered, can
   also be of any width and height */ 
.centered {
  display: inline-block;
  vertical-align: middle;
  width: 300px;
}