<!DOCTYPE html>
<html>
<head>
<style>
.TestStyle
{
font: 12pt verdana;
font-weight:700;
color:orange;
}
</style>
</head>
<body>
<form runat="server">
<asp:Button id="Button" CssClass="TestStyle" Text="Submit" runat="server"/>
</form>
</body>
</html>