.menu {
    position: fixed;
    top: 0;
    right: -300px; /* 초기에는 화면 밖으로 숨김 */
    width: 300px;
    height: 100vh;
    z-index: 1;
    
    background-color: white;
    transition: right 1s ease; /* 슬라이드 애니메이션 적용 */
  }
  
  .menu-content {
    margin-top: 100px;
    padding: 20px;
    display: flex;
    flex-direction: column;
  }
  
  .menu-button {
    position: fixed;
    top: 20px;
    left: 20px;
  }

  #menuBtn {
    background-color: transparent;
    border: none;
  }

  #gobackBtn {
    border: none;
    background-color: transparent;
}
  
  #line {
    width: 250px;
    height: 1px;
    background-color: orange;
    border: none;
    margin: 10px 0px 10px 0px;
  }

  #x-btn {
    background-color: transparent;
    border: none;

    position: relative;
    top: 50px;
    left: 250px;
  }