Responsive with asp.net datalist control

I have a problem with responsive using datalist control. But I have resolved this issue set Repeatlayout="Flow"

asp:DataList ID="DataList1" runat="server"  RepeatLayout="Flow">
                     <ItemTemplate>
                       <div class="col-sm-4 products">
                    <div class="news_img">
                        <asp:Image ID="Image1" runat="server" class="img-responsive center-block" ImageUrl='<%# bind("backgroundimage") %>'/>
                      </div>
                    <h2 class="heading1">
                        <asp:Label ID="lblName" runat="server" Text='<%# bind("Name") %>'></asp:Label></h2>
                    <p class="product_con">
                        <asp:Label ID="lblDescription" runat="server" Text='<%# bind("Description") %>'></asp:Label></p>
                    <div class="btn btn-primary center-block"><a href="#">+ Read More</a></div>
           </div>
 
                   </ItemTemplate>
 
               </asp:DataList>