modify error page and grid setting

@@ -23,7 +23,7 @@
       <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
     </ol>
   </div>
-      <div id="service">
+      <div id="article">
         <h2>로그인후 접속되는 페이지로 만들기</h2>
         <form action="service/chatservice.html" id="chat">
           <label for="chatservice">친구와 채팅하기</label>
@@ -36,12 +36,12 @@
         </form>
 
         <form action="service/addfriend.html" id="addfriend">
-          <label for="makefriend">친구추가하기:</label>
+          <label for="makefriend">친구추가하기</label>
           <input type="submit" value="친구추가하기">
         </form>
 
         <form action="randomchat.html" id="randomchat">
-          <label for="randomchat">랜덤채팅:</label>
+          <label for="randomchat">랜덤채팅</label>
           <input type="submit" value="랜덤채팅">
         </form>
       </div>

@@ -17,6 +17,7 @@
       <li><a href="loginmain.html" class="saw">로그인</a></li>
       <li><a href="signinmain.html" class="saw">회원가입</a></li>
       <li><a href="question.html" class="saw">문의사항</a></li>
+      <li><a href="afterlogin.html" class="saw">로그인이후</a></li>
     </ol>
   </div>
       <div id="article">

 <style>
+  title{
+
+  }
   body
   {
     margin:0;