body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #ffffff;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    text-align: center;
  }

  .clock-container {
    padding: 20px;
    border-radius: 10px;
    background-color: #333333;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.5);}
  h1 {
    font-size: 24px;
    margin-bottom: 20px;}

  #clock {
    font-size: 48px;
    font-weight: bold;
  }
  .home-button { position: fixed;
    top: 0px; /* 화면 상단에서 10px 떨어짐 */
    left:0px; /* 화면 왼쪽에서 10px 떨어짐 */
    padding: 15px 30px;
    font-size: 18px;
    font-weight: bold;
    text-decoration: none;
    text-transform: uppercase;
    color: #fff;
    background: linear-gradient(45deg, #ff6a00, #ee0979);
    border-radius: 50px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    transition: all 0.3s ease-in-out;
    z-index: 9999; /* 다른 요소보다 앞에 보이도록 설정 */
    overflow: hidden; }
  .home-button:before { content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 300%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transform: skewX(-45deg);
    transition: all 0.4s ease-in-out; }
  .home-button:hover:before { left: 100%;  }
  .home-button:hover { transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.3); }
  .home-button:active {
    transform: translateY(2px) scale(0.98);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.3); }
    .more-link { display: inline-block;
      padding: 10px 20px;
      font-size: 20px;
      font-weight: 5px;
      color: #fff;
      background-color: #333;
      text-align: center;
      text-decoration: none;
      border: 2px solid #333;
      border-radius: 4.5px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
      transition: all 0.3s ease;
      width: auto;
      margin: 10px; }
  .more-link:hover { background-color: #f5f5f5;
      color: #333;
      border-color: #f5f5f5;
      transform: scale(1.1);
      box-shadow: 0 6px 15px rgba(0, 0, 0, 0.2); }
  .more-link:active { transform: scale(1);
      box-shadow: 0 2px 5px rgba(0, 0, 0, 0.15); }
  .more-link:focus {  outline: none;
      box-shadow: 0 0 0 4px rgba(0, 120, 255, 0.5); }
        body.light-mode {
            background-color: #ffffff;
            color: #000000;
          }
          body.dark-mode {
            background-color: #121212;
            color: #ffffff;
          }

          .container {
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            height: 100vh;
          }

          button {
            padding: 10px 20px;
            font-size: 16px;
            cursor: pointer;
            border: none;
            border-radius: 5px;
            background-color: #007bff;
            color: #ffffff;
            transition: background-color 0.3s ease;
          }

          button:hover {
            background-color: #0056b3;
          }