rodape .net using css materialize

I'm doing a project in asp net but the footer is on top of the menu; What can I do?

HTML

<div class="container">
           <div class="row">
                <div class="col s10">

                </div>
                <div class="col s2 text-right">
                <asp:LinkButton ID="lnkSaveSettingSubject" CssClass="btn btn-primary" OnClick="lnkSaveSettingSubject_Click" runat="server"  > 
                        Salvar

                </asp:LinkButton>
                </div>
            </div>
        </div>
    </div>

   </footer>

css

<style>
        .header-content.rodape-fixed {
           width:84.75%;

           margin-left:150%;
           z-index: 999;
           right:0px;
           bottom:0;
           margin-left:50%;
           position: fixed;

        }