Solved: Way to have hovering effect

Hi,
I want to have hovering effect (have deep color when mouse is on top of the Linkbutton). What to adjust below?
<body>
    <form id="main_form" runat="server">
    <div class="content" id="wrapper">
    <table width="100%">
        <tr>
            <td align="right" style="ForeColor:#0A2757;">
            <asp:LinkButton ID="lb_reg" 
                Text = "Register"
               CssClass="lb_reg"
               Font-Names="Times New Roman" 
               Font-Size="10pt" 
               OnClick="lb_reg_Click" 
               runat="server"/>
               &nbsp;|&nbsp; 
               <asp:LinkButton ID="lb_log" 
               Text = "Login"
               CssClass="lb_log"
               Forecolor="#0A2757"
               Font-Names="Times New Roman" 
               Font-Size="10pt" 
               OnClick="lb_log_Click" 
               runat="server"/>
               &nbsp;|&nbsp; 
               <asp:LinkButton ID="lb_supp" 
               Text = "Support"
               CssClass="lb_log"
               Forecolor="#0A2757"
               Font-Names="Times New Roman" 
               Font-Size="10pt" 
               OnClick="lb_supp_Click" 
               runat="server"/>
            </td>
        </tr>
        ...
            .lb_reg{
                color: black;
                top: 30px;
                left: 1075px;
                width: 36px;
                height: 30px;
                font-size: large;
                font-weight: bold;
                text-decoration: none;
            }  
            .lb_reg:hover{
                background-color: black !important;
                color: white !important;
            }  
            .lb_log{
            color:#000!important;
            top: 30px;
            left: 1130px;
            width: 36px;
            height: 30px;
            font-size:large;
            font-weight:bold;
            }
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