Gridview using html in ASP.NET - html

Question

I have a doubt in gridview design can anyone help me.
I have created a gridview, but when im giving any text to that grid cell my grid design is changing. My question is how to give a fixed height to the gridview even if we are entering text into one cell or no: of cells. And Here is my code.
Thank You in Advance.
<asp:GridView ID="GrvSchoolName1" runat="server" AllowPaging="True" PageSize="4" Height="30px" BackColor="White"
BorderColor="#999999" BorderStyle="Solid" BorderWidth="1px" CellPadding="3"
GridLines="Vertical" CssClass="grvclass"
AutoGenerateColumns="False"
ForeColor="Black" onpageindexchanging="GrvSchoolName1_PageIndexChanging">
<PagerSettings Mode="NumericFirstLast" PageButtonCount="4" FirstPageText="First" LastPageText="Last"/>
<AlternatingRowStyle BackColor="#CCCCCC" />
<Columns>
<asp:TemplateField HeaderText="Emergency Alert" HeaderStyle-Height="30px">
<ItemTemplate>
<div style="overflow:auto; height:60px;">
<asp:Label ID="Label1" runat="server" Text='<% #Eval("AlertMessage") %>' ></asp:Label>
</div>
</ItemTemplate>
</asp:TemplateField>
</Columns>
<FooterStyle BackColor="#CCCCCC" />
<HeaderStyle BackColor="Black" Font-Bold="True" ForeColor="White" />
<PagerStyle BackColor="#999999" ForeColor="Black" HorizontalAlign="Center" />
<SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#808080" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#383838" />
</asp:GridView>
</div>

Answer 1

Give a css class to your itemstyle template. Same works for the header :)
.NET
<ItemStyle CssClass="items"> </ItemStyle>
<ItemTemplate>
your stuff
</ItemTemplate>
CSS.
.items{width:200px;}