exampleAdd

<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <meta http-equiv="X-UA-Compatible" content="ie=edge">
  <link rel="stylesheet" href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" integrity="sha384-Vkoo8x4CGsO3+Hhxv8T/Q5PaXtkKtu6ug5TOeNV6gBiFeWPGFN9MuhOf23Q9Ifjh" crossorigin="anonymous">
  <title>Document</title>
  <style media="screen">
          div {
        border: 1px blue dashed;
        display: inline-block;
        width: 305px;
        padding: 10px 10px 10px 10px;
      }
  </style>
</head>

<body>

      <div class="form-group">
          <div class="col-sm-6">
            <label for="nomUser">Usuario:</label>
            <input type="text" id="nomUser">
          </div>
          <div class="col-sm-6">
            <label for="nomUser">Contrase&ntilde;a:</label>
            <input type="text" id="nomUser">
          </div>
        </div>
        <br />
        <div class="form-group" id="form">
          <div class="col-sm-6">
            <label for="nomUser">Calle:</label>
            <input type="text" id="nomUser">
          </div>
          <div class="col-sm-6">
            <label for="nomUser">Casa:</label>
            <input type="text" id="nomUser">
          </div>
      </div>

      <button onclick="clonar();">Agregar mas restaurantes</button>
    <br />
    <br />
    <div id="contenedor"></div>


</body>

<script type="text/javascript">
        function clonar() {
            cantidad = 0;
            myForm = document.getElementsByTagName('div');
            cant = myForm.length;
            clonForm = myForm[0].cloneNode(true);
            clonForm.id = "form" + cant;

            document.getElementById("contenedor").appendChild(clonForm);
  }
</script>
</html>