How to make a safe HTML code?

why some one want to attack you web? they would certainly want to attack your server first, and then from there they will have access to your html page. no tag can save your page. if you mean content copycat. no tag can protect your page also.

@Samir: As @Agus said, no tag prevents the site from being hacked or content being copied. But you can prevent users from selecting your text with the help of CSS. For overall site security, use an ssl certificate to get yourself an HTTPS prefix to the domain with the green lock icon that appears in most browsers.

Agus Mei is correct...👍

You need to secure your Sever, as much as possible....👍

What do you mean by safe?

A code that helps to prevent the attack to our web page, that does not allow the theft of information or impersonation.

Thank you for your answers, they got me out of doubt

if you mean hiding your sourcecode use php embedded in your html