<form class="@classNames form-inline" method="get" name="searchform" action="<?php bloginfo('url'); ?>/">
  <div class="@containerInner">
      <div class="row">
          <div class="col-lg-18">
            @if( showButton && joinButton) {
                <div class="input-group">
            }
            @if (buttonPosition === 'right') {
                @include("input")
            }
            @if( showButton) {
                <span class="input-group-btn">
                    <input type="button" class="@button.classNames" href="#" onclick="document.searchform.submit()" value="@_searchBtnText">
                </span>
            }
            @if (buttonPosition === 'left') {
                @include("input")
            }
            @if (icon.passive.picture.fileName) {
                <img class="@(icon.classNames)-picture" src="@icon.passive.picture" data-hovered="@icon.hovered.picture">
            }
            @if( showButton && joinButton) {
                </div>
            }
        </div>
    </div>
  </div>
</form>