3. Caption tag uses
The HTML <caption> tag is used for creating table
captions. It is used in conjunction with
the <table>tag and represents the title of the table.
The <caption> tag must be inserted immediately
after the <table> tag. A table should have no more
than one caption
4. <details> tag
<details>
<summary>Click to open</summary>
<p>If your browser supports this element, it should
allow you to expand and collapse these
details.</p></details>
5. Click to open
If your browser supports this element, it should allow
you to expand and collapse these details.
7. Keygen tag used
The HTML <keygen> tag is used for generating a key
pair. This can be used for generating signed
certificates, which can be used to authenticate to
services that use Transport Layer Security (TLS) and
certificate authentication. When the control's form is
submitted, the private key is stored in the local
keystore, and the public key is packaged and sent to
the server.