WebGroupbox style


what is the elementclassname (in bootstrap) to have a better groupbox style like showed in the page : https://stackoverflow.com/questions/29698264/do-we-have-any-group-box-in-bootstrap

I must use a panel ?


A TWebPanel wraps just one HTML DIV and this bootstrap groupbox uses already 3 DIV elements.
You could create this by dropping 3 TWebHTMLDiv components like in the example:

<div class="panel panel-default">
  <div class="panel-heading">Panel heading without title</div>
  <div class="panel-body">
    Panel content 

and set for the TWebHTMLDiv components you used the ElementClassName to the Bootstrap styles used here.