Add TAG HTML with CSS content

Using after or before you can add some content to your tag and style it but using tags within the content will be interpreted literally as text.

#teste:before{
content: "<a href='http://link.com'>Era pra ser um link</a>";
}

As our friend Vitor André spoke, it will be really interpreted as text. Ideally, you should use jquery to do html injection on the page, using append or prepend.