.buttonDiv{background-color: #4e4f50;

            border: 2px solid #83ABD3;

            border-radius: 4px;

            -khtml-opacity: 0.5;

            -moz-opacity: 0.5;

            opacity: 0.7;

            filter: alpha(opacity=);

            color: #f4f4f4;

            text-align:center;

            position:fixed;

            width:97.2%;

            bottom: %;

}

 <div  class="buttonDiv">

        <a href="javascript:void(0)" class="easyui-linkbutton" onclick="submitForm()" style="    padding: 1px 7px;">保存</a>

        <a href="javascript:void(0)" class="easyui-linkbutton" onclick="clearForm()" style="    padding: 1px 7px;">重置</a>

    </div>