Chap 17: web forms

Did I miss some major step?

I'm getting an error "only content controls are allowed directly in a content page that contains content controls." on default.aspx.

Here is the code that I have used from the website:

<%@ Page Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" ClassName="Default_aspx" title="Untitled Page" Theme="Red"%>
<asp:Content ID="Content1" ContentPlaceHolderID="cphPageContent" Runat="Server">
    <asp:TextBox ID="txtTest" Runat="server">Just some text</asp:TextBox>
    <br/>
    <asp:Button ID="btnTest" Runat="server" Text="Button" /></asp:Content>

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Getting a number of Validation errors that attribute 'bgcolor' and 'height' is outdated adn a newer construct is recommended for the masterpage.master

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Validation Element 'style' is missing from <style> on masterpage.master

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Validation atribute 'height' is not a valid attribute of element 'table' on masterpage.master

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Thanks in advance.