Class "tag name "

I am not sure I understand your question. Are you trying to style an html element with a class of "name" or "tag name"? I.E:

<div class="name">
    <!--div contents-->
</div>

If you are attempting to attach a class with the name "tag name", it will be read as two separate classes, one named "tag", and one named "name"

<div class="tag name">
    <!--div contents--->
</div>

Or are you trying to style an element with CSS which has a class of "tag name" or "name"? I.E:

.name {
    // Style parameters
}

If going with "tag name" as class declaration, the CSS would either style both together, or one/the other/both separately:

.tag, .name {
  // Style parameters
}

.tag {
   // Style parameters
}

.name { 
   // Style parameters
}

I'm still not sure what is being asked, but I hope this helped or I am happy to try and help more if not!

This is what i mean it was mentioned on the welcome to html and css class <h1 Class ="tag name"> hello i'm Jane.<h1> so i didn't understand what's the class name? because in the Styles.css she used .tag{... } for me i thought it's .name{...}