Paste this into the console:
levels.push({ name: 'super secret-1', instructions: 'This is a secret level you get no instructions.', board: 'rggggyyyyy', style: {'flex-direction': 'column-reverse', 'flex-wrap': 'wrap-reverse', 'align-content': 'space-between', 'justify-content': 'center'}, before: "#pond {\n display: flex;\n", after: "}", });
Proceed to the secret 25th level! You can create your own levels, and make a pull request to his git repository if you really want to add some interesting practice levels. Just modify levels.js.
You can reference his levels here when trying to create your own.
https://github.com/thomaspark/flexboxfroggy/blob/gh-pages/le...