NOTE: YOU MUST DO THIS EVERYTIME YOU WANT TO UPDATE YOUR SAVE FILE.
TO EXPORT!
Click the options button located at the top of the page.
Click the "Save to file" button. This will save a file to your PC that can be accessed at any time. This file can be shared to your friends too!
TO IMPORT!
Click the "Load from file" button. This will make you select a file from your PC. Locate your save file and press upload. Just like that, your save file has been restored!