In this cool text animation by Lisi Linhart, is great when you want to change one single letter from a word to change the word completely eg: Live/Love, Live/Life, etc. In this example the I from live flips and forms the character o to change
If you are having trouble with the pen, try the archived copy on GitHub
Flip a Letter Snippet
See the Pen Living the CSS-only life by Lisi (@lisilinhart) on CodePen.0