Using the Page Header Property
To change the Title or Cascading Style Sheet rules in a Master Page, you can use the Page.Header property.
File: Default.master
<%@ Master Language="C#" %>
Simple Master
File: Default.aspx
<%@ Page Language="C#" MasterPageFile="~/Default.master" %>
Content in the first column
Content in the first column
Content in the second column
Content in the second column