bel>
                    <input type="checkbox" id="video" name="video" value="1">
                    {{HTML5}}
                </label>
            </div>
        </div>
    </div>
    <div class="row">
        <div class="col-xs-11">
            <div class="col-xs-9">
                <div id="preview" class="thumbnail pull-left"></div>
            </div>
            <div class="col-xs-3">
                <button id="insert-btn" class="btn btn-primary btn-lg btn-block" type="button">{{Insert}}</button>
  