You can use the following code to embed your crossword puzzle on your website. Attribution to https://crosswordlabs.com is not required, but appreciated.
<iframe width="500" height="500" style="background-color:white; padding:5px 0px 0 5px; border:3px solid black; margin:auto; display:block" frameborder="0" src="https://crosswordlabs.com/embed/harry-potter-and-the-scorers-stone-3"></iframe>
You can append
?clue_height=30 to the iframe URL to adjust the height of the clue section. By default, it takes up 25% of the available space.