title: Bootstrap 3 - 2 inputs in the same line but not in the same width as one input
body: <p>The title might sound tricky but here is my problem :
  <img src="https://i.stack.imgur.com/NJn63.png" alt="inputs for &quot;Nom&quot; and &quot;Prénom&quot; are in the same line but they are not in the same width line the first input."></p>
  
  <p>Inputs for "Nom" and "Prénom" are, as i want, in the same line but they are not in the same width line the first input.</p>
  
  <p>Here is my code :</p>
  
  <pre><code>&lt;form class="form-horizontal"&gt;
          &lt;div class="form-group"&gt;
              &lt;label class="col-sm-2 control-label"&gt;&lt;abbr title="Code National de l'Étudiant"&gt;CNE&lt;/abbr&gt; &lt;span class="important"&gt;*&lt;/span&gt;&lt;/label&gt;
              &lt;div class="col-sm-10"&gt;
                &lt;input type="text" name="cne" class="form-control"&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="form-group"&gt;
              &lt;label for="nom" class="col-sm-2 control-label"&gt;Nom &lt;span class="important"&gt;*&lt;/span&gt;&lt;/label&gt;
              &lt;div class="col-sm-10"&gt;
                  &lt;div class="col-sm-6"&gt;
                      &lt;input type="text" name="nomFr" class="form-control" id="nom" placeholder="En français"&gt;
                  &lt;/div&gt;
                  &lt;div class="col-sm-6"&gt;
                      &lt;input type="text" name="nomAr" class="form-control" id="nom" placeholder="العربية" dir="rtl"&gt;
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="form-group"&gt;
              &lt;label for="prenom" class="col-sm-2 control-label"&gt;Prénom &lt;span class="important"&gt;*&lt;/span&gt;&lt;/label&gt;
              &lt;div class="col-sm-10"&gt;
                  &lt;div class="col-sm-6"&gt;
                      &lt;input type="text" name="prenomFr" class="form-control" id="prenom"&gt;
                  &lt;/div&gt;
                  &lt;div class="col-sm-6"&gt;
                      &lt;input type="text" name="prenomAr" class="form-control" id="prenom" placeholder="العربية" dir="rtl"&gt;
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="form-group"&gt;
              &lt;label for="dateNaissance" class="col-sm-2 control-label"&gt;Date de naissance &lt;span class="important"&gt;*&lt;/span&gt;&lt;/label&gt;
              &lt;div class="col-sm-10"&gt;
                  &lt;input type="date" name="dateNaissance" class="form-control" id="dateNaissance"&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/form&gt;
  </code></pre>