e show" id="collapseExample1">
          <form class="form-horizontal">
            <div class="form-group">
              <label class="col-form-label" for="prependedInput">Prepended text</label>
              <div class="controls">
                <div class="input-prepend input-group">
                  <div class="input-group-prepend">
                    <span class="input-group-text">@</span>
                  </div>
                  <input id="prependedInput" class="form-control" size="16" type="tex