Intended-vertical-left align tabs

By using the OuterCssClass="" and CssClass proprties of the RadTabstrip control along with the right CSS class selectors you can achieve intended-vertical-left align tabs. Example:

<style type="text/css">
    .border {
        border-bottom: 1px solid grey; 
    }
     .RadTabStripVertical li.rtsLI .new, .new {
        padding-left: 10px !important;
    }
    .RadTabStripVertical li.rtsLI .new1, .new1 {
        padding-left: 20px !important;  
    }
    .RadTabStripVertical li.rtsLI .new2, .new2 {
        padding-left: 30px !important;
    }
</style>

<telerik:RadTabStrip RenderMode="Lightweight" ID="Radtabstrip1" runat="server" SelectedIndex="1" Orientation="VerticalLeft">
    <Tabs>
        <telerik:RadTab ImageUrl="VImg/icon_05.gif" Text="Management" CssClass="border">
        </telerik:RadTab>
        <telerik:RadTab ImageUrl="VImg/icon_02.gif" Text="Scheduling" OuterCssClass="new" CssClass="border">
        </telerik:RadTab>
        <telerik:RadTab ImageUrl="VImg/icon_03.gif" Text="Meetings" OuterCssClass="new1" CssClass="border">
        </telerik:RadTab>
        <telerik:RadTab ImageUrl="VImg/icon_04.gif" Text="Briefcase" OuterCssClass="new2" CssClass="border">
        </telerik:RadTab>
        <telerik:RadTab ImageUrl="VImg/icon_01.gif" Text="Settings">
        </telerik:RadTab>
    </Tabs>
</telerik:RadTabStrip>