html - Bootstrap - input-group-btn wants to float right -

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so i'm building navbar on website search bar included, along grouped button. works fine on desktop view, when shrink down mobile view , site produces collapsible menu, search bar stays left, button floats off right. not have issue when remove span input-group-btn class surrounds it.

<form class="navbar-form navbar-left form-inline" role="search">     <div class="row">         <div class="input-group">             <input type="text" class="form-control" style="width: 250px;"/>             <span class='input-group-btn'>                 <button type="button" class="btn btn-default" aria-label="search">             <span class="glyphicon glyphicon-search" aria-hidden="true"></span>                 </button>             </span>         </div>     </div> </form>

picture included http://bit.ly/1g706rc

edit: fixed own issue! had add pull-left class span


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