<form class="navbar-form navbar-left" role="search" >
                        <div class="form-group" style="width: 500px">
                            <input type="text" ng-model="keyword" ng-change="search()" class="form-control" placeholder="Search" style="width: 100%">
                        </div>
                        <button type="submit" class="btn btn-default"><span class="glyphicon glyphicon-search" aria-hidden="true" style="margin-right: 5px"></span>Submit</button>
                    </form>