myinfo.css

  @import url('https://fonts.googleapis.com/css2?family=Poppins');

  * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
      font-family: 'Poppins', sans-serif;
  }

  .container {
      width: 100%;
      height: 100vh;
      background-color: rgba(0, 0, 0, 0);
      display: flex;
      align-items: center;
      justify-content: center;
  }

  .background-clip {
      position: absolute;
      right: 0;
      bottom: 0;
      z-index: -1;
  }

  @media (min-aspect-ratio:16/9) {
      .background-clip {
          width: 100%;
          height: auto;
      }
  }

  @media (max-aspect-ratio:16/9) {
      .background-clip {
          width: auto;
          height: 100%;
      }
  }

  header {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      padding: 20px 100px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      z-index: 99;
  }

  .logo {
      font-size: 2em;
      color: #fff;
      user-select: none;
  }

  .navigation a {
      position: relative;
      font-size: 1.1em;
      color: #fff;
      text-decoration: none;
      font-weight: 500;
      margin-left: 40px;
  }

  .navigation a::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -6px;
      width: 100%;
      height: 3px;
      background: #fff;
      border-radius: 5px;
      transform-origin: right;
      transform: scaleX(0);
      transition: transform .5s;
  }


  .navigation a:hover::after {
      transform-origin: left;
      transform: scaleX(1);
  }

  .myinfo::after {
      content: '';
      position: absolute;
      left: 0;
      bottom: -6px;
      width: 100%;
      height: 3px;
      background: #fff;
      border-radius: 5px;
  }

  .navigation .btnLogout {
      width: 100px;
      height: 40px;
      background: transparent;
      border: 2px solid #fff;
      outline: none;
      border-radius: 6px;
      cursor: pointer;
      font-size: 1.1em;
      color: #fff;
      font-weight: 500;
      margin-left: 40px;
      transition: .5s;
  }

  .wrapper {
      position: relative;
      width: 1000px;
      height: 600px;
      background: transparent;
      background-color: rgba(255, 255, 255, 0.3);
      border: 2px solid rgba(255, 255, 255, .5);
      border-radius: 20px;
      backdrop-filter: blur(30px);
      box-shadow: 0 0 30px rgba(0, 0, 0, .5);
      display: flex;
      justify-content: center;
      align-items: center;
      overflow: hidden;
      transform: scale(1);
  }

  .wrapper .form-box {
      width: 100%;
      padding: 40px;
      transition: none;
  }

  .wrapper h2 {
      position: absolute;
      top: 10%;
      font-size: 2em;
      color: #272727;
      text-align: center;
  }

  .output-box {
      position: relative;
      width: 100%;
      height: 50px;
      border-bottom: 2px solid #272727;
      margin: 30px 0;
  }

  .output-box label {
      position: absolute;
      top: 50%;
      left: 5px;
      transform: translateY(-50%);
      font-size: 1em;
      color: #272727;
      font-weight: 500;
      pointer-events: none;
      transition: .5s;
  }

  .output-box output {
      position: absolute;
      left: 100px;
      width: 60%;
      height: 100%;
      border: none;
      outline: none;
      font-size: 1em;
      color: #272727;
      font-weight: 600;
      padding: 10px 35px 0 5px;
      background: transparent;
      align-items: center;
  }

  .output-box .input_nowpassword {
      position: absolute;
      left: 100px;
      width: 60%;
      height: 100%;
      border: none;
      outline: none;
      font-size: 1em;
      color: #272727;
      font-weight: 600;
      padding: 0 35px 0 25px;
      background: transparent;
  }

  .output-box .input_newpassword {
      position: absolute;
      left: 100px;
      width: 60%;
      height: 100%;
      border: none;
      outline: none;
      font-size: 1em;
      color: #272727;
      font-weight: 600;
      padding: 0 35px 0 25px;
      background: transparent;
  }

  /* Select 드롭다운 스타일링 */
  .output-box select {
      position: absolute;
      left: 100px;
      width: 60%;
      height: 100%;
      border: none;
      outline: none;
      font-size: 1em;
      color: #272727;
      font-weight: 600;
      padding: 0 35px 0 5px;
      cursor: pointer;
      /* 드롭다운 메뉴임을 나타내는 커서 스타일 */
      -webkit-appearance: none;
      /* 기본 브라우저 스타일 제거 */
      -moz-appearance: none;
      appearance: none;
      background: transparent;
  }

  .output-box .icon {
      position: absolute;
      right: 8px;
      font-size: 1.2em;
      color: #272727;
      line-height: 57px;
  }

  /* 수정하기 버튼 스타일링 - 로그아웃 버튼 스타일 참조 */
  .change_btn {
      width: 100px;
      /* 또는 원하는 너비 */
      height: 40px;
      background: transparent;
      border: 2px solid #fff;
      outline: none;
      border-radius: 6px;
      cursor: pointer;
      font-size: 1.1em;
      color: #fff;
      font-weight: 500;
      transition: .5s;
      float: right;
  }

  .change_btn:hover {
      background: #fff;
      /* 호버 시 배경색 변경 */
      color: #272727;
      /* 호버 시 글자색 변경 */
  }

  /* Select 드롭다운 화살표 스타일링 */
  .output-box select::-ms-expand {
      display: none;
  }

  /* 아이콘과 함께 select 스타일링 */
  .output-box .icon {
      position: absolute;
      right: 8px;
      font-size: 1.2em;
      color: #272727;
      line-height: 57px;
      pointer-events: none;
      /* 아이콘이 선택을 방해하지 않도록 설정 */
  }