cssClass

<%@ Page Language="C#" AutoEventWireup="true"  CodeFile="Default.aspx.cs" Inherits="_Default" %><!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" ><head id="Head1" runat="server">
    <title>无标题页</title>
    <style type="text/css">
<!--
.myTextBoxCss {
    float: right;
    color: White;
    background: Black;
}
-->
</style>
</head>
<body>
    <form id="formID" runat="server">
    <asp:TextBox ID="TextBox1" runat="server" CssClass="myTextBoxCss"></asp:TextBox>
    </form>
    
</body>
</html>