How to make it go back smoothly?

Question

css

Good afternoon, there is such a code on CodePen, when the hover is scale(2,2.3). But when I remove the cursor, it immediately returns to its original position. how to make it return as smoothly
https://codepen.io/anon/pen/KBdLpZ

Answer 1

You did everything right, but in .block after transition you lost the colon.