Learn how to create equal height columns with CSS.
Read on how to do it in this tutorial: https://www.w3schools.com/howto/howto_css_equal_height.asp
How To Create Equal Height Columns
When you have columns that should appear side by side, you'll often want them to be of equal height (matching the height of the tallest).
Try it yourself here: https://www.w3schools.com/howto/tryit.asp?filename=tryhow_css_equal_height
Note: Flexbox is not supported in Internet Explorer 10 and earlier versions.
Tip: Read more about flexible boxes in our CSS Flexbox Tutorial.