Page with embedded interactive elements

All of the following embeddings violate the HTML specification for links or buttons.

Bug 1. This link to information about buttons like this contains one.

Bug 2. This link to information about checkboxes such as this contains one.

Bug 3. This link to information about drop-down lists such as AB contains one.

Bugs 4 and 5. This link to information about HTML text inputs (), buttons, etc. contains a text input and a button.

Bug 6. This I have read Button button contains a link.

Bugs 7 and 8. This Check this and click buttons button contains a checkbox and a link.