<div class="navigation_main">
    <a href="/logout"><button class="btn btn-primary">로그아웃</button></a>
    <a href="/main"><button class="btn btn-primary">검색</button></a>
    <a href="/mypage"><button class="btn btn-primary">마이페이지</button></a>
    <a href="/timetable"><button class="btn btn-primary">나만의시간표</button></a>
    <a href="/ttlist"><button class="btn btn-primary">시간표수정</button></a>
</div>