Thanks. As i read the article correctly this is more when you know what text is too be found inside the tag.
What i am looking for are more custom Class css. I did find something that you need to add this to the yaml header only this is effecting the whole page. I want to have this for one line.
Can i create my own custom class and use this on one particluar part of text in the document?
i believe this plugin provides the closest to what u explained. another option is write a html code, quoting back from your example, you can do <h3 class="thistitle">My Special Title</h3> or <span class="thistitle">My Special Title</span>