You can do that using the wrappers (available when you use advanced mode) e.g.

Wrapper Top
<div class="

Wrapper Bottom
">

Is that what you need?

Yes we have already use this tips but how

• we sometimes need multiple value"
  
• How do you achive to get the class AND a custom value inside the wrapper lile : <div class="customfields1">customfields 2</div>...
  

Haaa Ok I just take another look at your proposal : Ok I get it You use 2 custom fields snippet ! Sneaky you !

Exactly - easy to implement but not necessarily intuitive.