This website contains age-restricted materials including nudity and explicit depictions of sexual activity.
By entering, you affirm that you are at least 18 years of age or the age of majority in the jurisdiction you are accessing the website from and you consent to viewing sexually explicit content.
Lemmy DID support HTML and iframes sometime ago. The devs scrapped it for security reasons and I hear they are planning to bring it back in future after making sure it is secure enough to use.