Master page:
<div class="container">
<asp:ContentPlaceHolder ID="ContentPlaceHolder1" runat="server">
</asp:ContentPlaceHolder>
</div>
<footer>
<div class="container">
<div class="col-xs-12 expo">
<a href="" target="_blank">some site</a></div>
</div>
</footer>
Why the page show first foter and then contentplaceholder?
Because I used the table I had to add
<FooterTemplate>
</table>
</FooterTemplate>