Link button not visible

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ASP.NET

I have written following code for two link buttons.

<div class="pagemenu">
                    <div class="pagemenu_btn">
                        <asp:LinkButton ID="LnkBtnSave" TabIndex="15" ValidationGroup="requied" onkeyup="Button_SpaceBar(event,this)"
                            runat="server" OnClick="LnkSave_Click">
                        <div class="save-button">Save</div>                         
                        </asp:LinkButton>
                    </div>
                    <div class="pagemenu_btn">
                        <asp:LinkButton ID="LnkBtnCancel" TabIndex="16" ValidationGroup="none" onkeyup="Button_SpaceBar(event,this)"
                            runat="server" OnClick="LnkCancel_Click">
                        <div class="cancel-button"><span>Cancel</span></div> 
                        </asp:LinkButton>
                    </div>
                </div>

When I excecute Save button is visible in IE only not in CHROME and MOZILLA.
But Cancel button is visible in all browsers. Please help me to find a solution for this.