                    <div class="row">
                        <div class="col-md-8">
                            <h3 class="heading_a"><span class="heading_text">Combination Chart</span></h3>
                            <div id="c3_combined" style="height:280px"></div>
                        </div>
                        <div class="col-md-4">
                            <h3 class="heading_a"><span class="heading_text">Gauge Chart</span></h3>
                            <div id="c3_gauge" style="height:280px"></div>
                        </div>
                    </div>
                    <div class="row">
                        <div class="col-md-4">
                            <h3 class="heading_a"><span class="heading_text">Donut Chart</span></h3>
                            <div id="c3_donut" style="height:280px"></div>
                        </div>
                        <div class="col-md-8">
                            <h3 class="heading_a"><span class="heading_text">Scatter Plot</span></h3>
                            <div id="c3_scatter" style="height:280px"></div>
                        </div>
                    </div>
                     <div class="row">
                        <div class="col-md-12">
                            <h3 class="heading_a"><span class="heading_text">Grid Lines</span></h3>
                            <div id="c3_grid_lines" style="height:280px"></div>
                        </div>
                    </div>
