<Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet"
 xmlns:o="urn:schemas-microsoft-com:office:office"
 xmlns:x="urn:schemas-microsoft-com:office:excel"
 xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet"
 xmlns:html="http://www.w3.org/TR/REC-html40">
 <Styles>
  <Style ss:ID="Default" ss:Name="Normal">
   <Alignment ss:Vertical="Bottom"/>
   <Borders/>
   <Font x:Family="Swiss" ss:Size="8"/>
   <Interior/>
   <NumberFormat/>
   <Protection/>
  </Style>

Public Class SSStyle
    <XmlElement("Alignment")>
    Public Alignment As New SSAlignment
    <XmlElement("Font")>
    Public Font As New SSFont
    <XmlAttribute("NumberFormat")>
    Public NumberFormat As String
    <XmlArray("Borders")>
    Public Borders As New List(Of SSBorder)
End Class


<XmlRoot(Namespace:="urn:schemas-microsoft-com:office:spreadsheet", ElementName:="Workbook")> _
Public Class SSWorkbook

    <XmlArray(ElementName:="Styles")>
    Public Styles As New List(Of SSStyle)

End Class