Quick themeless today!
<iframe height="700" width="100%" allowfullscreen="true" style="border:none;width: 100% !important;position: static;display: block !important;margin: 0 !important;" name="89634e7e1a71ed1c4027028777644748e2668bf1270d010b44972d479305243c" src="https://amuselabs.com/pmm/crossword?id=3037d1dc&set=89634e7e1a71ed1c4027028777644748e2668bf1270d010b44972d479305243c&embed=1"></iframe>
(If the HTML isn't working, just copy and paste it into a private page on your Blogger and solve it from there)
UPDATE: https://htmledit.squarefree.com/ seems to work