JSFiddle - React, Tailwind, and code Playground

HTML

<div class="formConteneur">
 <form action="" method="post" id="" class="formProfil">
  <hr />
  <label class="checkbox-inline inputsNonAutres">
   <input type="radio" id="typeSituation-famille" value="typeSituation-famille" checked name="typeSituation4" /> Famille (ou assimilé) </label>
  <label class="checkbox-inline inputsNonAutres">
   <input type="radio" id="typeSituation-voisin" value="typeSituation-voisin" name="typeSituation4" /> Voisin </label>
  <label class="checkbox-inline inputsNonAutres">
   <input type="radio" id="typeSit ation-ami" value="typeSituation-ami" name="typeSituation4" /> Ami </label>
  <label class="checkbox-inline inputsNonAutres">
   <input type="radio" id="typeSituation-aideDomicile" value="typeSituation-aideDomicile" name="typeSituation4" /> Aide à domicile </label>
  <label class="checkbox-inline">
   <input type="radio" id="typeSituation-autre" value="typeSituation-autre" name="typeSituation4" /> autre </label>
  <label class="checkbox-inline">
   <input type="text" class="form-control round-form inputAutre" placeholder="Autres" style="width: 100%; !important; font-size:12px !important;" id="autresInput" /> </label>
  <br />
  <div class="boutFormSupprimer">X</div>
  <div class="ligneForm ligneFormProfil ">
   <label class="col-sm-2 col-sm-2 control-label" for="seniorNom" style="font-size:18px !important;">Nom </label>
   <input type="text" name="seniorNom" id="seniorNom" class="inputSideContenu inputProfil inputProfilSenior" value="Martine"   /> </div>
  <div class="ligneForm ligneFormProfil ">
   <label class="col-sm-2 col-sm-2 control-label" for="seniorPrenom" style="font-size:18px !important;">Prénom </label>
   <input type="text" name="seniorPrenom" id="seniorPrenom" class="inputSideContenu inputProfil inputProfilSenior" value="Martine"   /> </div>
  <div class="ligneForm ligneFormProfil ">
   <label class="col-sm-2 col-sm-2 control-label" for="seniorDate" style="font-size:18px !important;">Anniversaire </label>
   <input...

JavaScript

// AJOUTER  FORMULAIRE
      $(document).on('click', '.boutFormAjouter', function(){

  $.get( "formConteneur.html", function( data ) {
  $( ".formImport" ).append( data );
  alert( "Une personne a été ajoutée" );
});
});
   
   

   // SUPPRIMER FORMULAIRE
      $(document).on('click', '.boutFormSupprimer', function(){
  $(this).parents('.formConteneur').remove();
    $('.boutFormAjouter').css("display","block");       
    $('.boutFormDupliquer').remove();       
});