求CSS美化一下页面，我是前端小白

<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Frameset//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-frameset.dtd">

信息管理系统界面

    <frame src="clear.jsp" name="clearFrame" id="clearFrame" title="clearFrame" scrolling="no" noresize="noresize"/>

</frameset>
 <frame src="bg.jsp"></frame>

left

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

问题列表

<%
Navigation objNav = new Navigation();
RequestParameter rp = new RequestParameter(request);
int pageNo=rp.getInt("pageNo",1);
int pageSize=rp.getInt("pageSize",100);
long qId=rp.getLong("qId",-1);
questionDao dao=new questionDao();
PageList list=new PageList();
String systemCode=rp.getString("systemCode","");
String questionName=rp.getString("questionName","");
String answer="";
list=dao.pageList(pageNo, pageSize, qId, answer, systemCode, questionName);
for(int i=0;i QuestionInfo question=(QuestionInfo)list.get(i);
%>

    <div align="center" style="width: 250px">
        <a href="right.jsp?qId=<%=question.getqId() %>" target="rightFrame"><font style="font-size: 15px"><%=question.getQuestionName() %></font></a>
    </div>
    <%} %>

right

<%
Navigation objNav = new Navigation();
RequestParameter rp = new RequestParameter(request);
questionDao dao=new questionDao();
Long qId=rp.getLong("qId",-1);
if(qId!=-1){
QuestionInfo question=dao.getquestionInfo(qId);
%>

<%=question.getQuestionName() %>

            </div align="left">
            <div >
                <font style="font-size: 15x"><%=question.getAnswer() %></font>
            </div>
<%
}else{
%> 
        <div id="Main-List" align="center" style="height: 100px">
                <br/><font style="font-size: 24px">欢迎使用！</font>
        </div>
        <div align="center">
                <font style="font-size: 15x">**********************，谢谢合作！</font>
        </div>
<%} %>

top

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$(function(){ //顶部导航切换 $(".nav li a").click(function(){ $(".nav li a.selected").removeClass("selected"); $(this).addClass("selected"); }); });

在线帮助系统

Online and Continuing Education College,SWU

clear

代码没粘全，重新粘一下。

贴全了被浏览器翻译了