网格css问题

Question

我的报告中有一个gridview，但我的网格css是扭曲的，如果我设置最小高度和宽度但我想设置因为想要根据我的主要div自动调整gridview，即网格应相应拉伸根据主div或者屏幕和数据单元也因此而合并，所以我应该这样做

<div class="dvmain">


<table>
                    <tr>
                    <td>
  <div style="width:100%; overflow:auto;min-height:500px;">                                             
  <asp:GridView ID="GridView1" runat="server" width:auto Height:auto 
          AutoGenerateColumns="False" ShowFooter="True"  CssClass="Itemgrid"
          RowStyle-CssClass="RowStyle" 
  onrowdatabound="GridView1_RowDataBound" onrowcreated="GridView1_RowCreated">

                         <Columns>
                        <asp:BoundField DataField="itdsrno" HeaderText="Srno" />
                        <asp:BoundField DataField="itemname" HeaderText="Item" />
                        <asp:BoundField DataField="itdlength" HeaderText="Gsm" />
                        <asp:TemplateField HeaderText="Qty">
                        <FooterTemplate>
                        <asp:Label ID="lbltotalquan" runat="server" Text="Label"></asp:Label>
                         </FooterTemplate>
                         <ItemTemplate>
                            <asp:Label ID="lblquantity" runat="server" Text='<%# Eval("itdquan") 

%>'></asp:Label>
                         </ItemTemplate>

                        </asp:TemplateField>
                        <asp:BoundField DataField="unitname" HeaderText="Nos" />
                             <asp:BoundField DataField="mstexcDes" HeaderText="Grain" />
                        <asp:TemplateField HeaderText="Rate">

                            <FooterTemplate>
                            <asp:Label ID="Label2" runat="server" Text="INR"></asp:Label>
                            </FooterTemplate>
                            <ItemTemplate>
                            <asp:Label ID="Label1" runat="server" Text='<%# 

String.Format("{0:f2}",DataBinder.Eval(Container.DataItem,"itdRate")) %>' ></asp:Label>
                            </ItemTemplate>
                        </asp:TemplateField>

                        <asp:TemplateField HeaderText="Amount">
                            <FooterTemplate>
                                <asp:Label ID="lbltxttotal" runat="server"  />
                            </FooterTemplate>
                            <ItemTemplate>
                                <asp:Label ID="lblamount" runat="server" Text='<%# 

String.Format("{0:f2}",DataBinder.Eval(Container.DataItem,"itdAmou")) %>' ></asp:Label>
                            </ItemTemplate>

                        </asp:TemplateField>

                        <asp:BoundField DataField="itdrema" HeaderText="Remark" />
                    </Columns>


                </asp:GridView>
</div>


                        </td>
                    </tr>
                 </table>

            </td>
        </tr>
    </table>





</div>

CSS

<style type="text/css">
     .style1
  { 
    min-width:200px;

  }
        div.title
        {


            font-family:Verdana;
            font-size:14px;

         }
        .style2
        {
        }
        .dvitems
        {
            font-family:Verdana;
            font-size:12px;
            width: 108px;
        }
        .dvpo
        {
             font-family:Verdana;
            font-size:12px;
            width: 70px;
            height: 22px;
        }
        .dvinstruction
        {
             font-family:Verdana;
            font-size:12px;
            margin-left:20px;
        }
         .dvterms
         {
             font-family:Verdana;
            font-size:12px;
            margin-left:10px;
         }

        .style4
        {           
           height: 18px;
        }

        .style6
        {
        }
        div.dvmain
        {

        border-width:1px;
        border-style:solid;
        border-color:#000000;
        margin-left:80px;
        margin-top:50px;
        width:80%
        min-height:650px;
        font-family:Verdana;

        }
        .grd
        {
            font-family:Verdana;
            min-height:400px;
             position:relative;

        }
        .grd td
        {
           text-align:center;
           border: solid 1px #000000; 


        }


       /* div.dvtitle
        {
          border-width:1px;
        border-style:solid;
        border-color:#000000;  
        }*/
         div.dvright
        {
         /* border-width:1px;
        border-style:solid;
        border-color:#000000; */ 
        }
         div.dvleft
        {
          border-width:1px;
        border-style:solid;
        border-color:#000000;  
        }
      .tbborder 
      {
          border:1px solid black;
         border-right-style:none;
         border-left-style:none;

      }
      table.tbpayterms
      {
          border-left-style:none;
          border-width: 0 0 1px 1px;
          border-spacing: 0;
          border-style: solid;

      }
      .tbpayterms td
        {
    margin: 0;
    padding: 4px;
    border-width: 1px 1px 0 0;
    border-style: solid;
        }


        .body
        {
            font-family:Verdana;
        }

        .verticalLine {
            border-right:thick solid #000000;
            height:auto;
            border-width:1px;

            }

        .dvfaith
        {
            width: 138px;
        }

        .dvthanks
        {
            width: 117px;
        }




        .style14
        {
            width: 319px;
            height: 22px;
        }
        .style15
        {
            height: 22px;
        }


        .style17
        {
            width: 159px;
        }




        .style39
        {
            width: 219px;
        }




        .style40
        {
            width: 103px;
        }
        .style41
        {
            width: 102px;
        }
        .style42
        {
            width: 249px;
        }
        .style43
        {
            width: 185px;
        }




        .style58
        {
        }
        .style61
        {
            width: 69px;
        }




        .style63
        {
            width: 340px;
        }
        .style64
        {
            width: 273px;
        }




        .style67
        {
            width: 73px;
        }
        .style68
        {
            width: 87px;
        }




        .style69
        {
            width: 528px;
        }




        .style70
        {
            width: 112px;
        }
        @media print {
input#btnPrint {
display: none;
}
input#btnback {
display: none;
}

}



    </style>