.body {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      text-align: center;
    }
 
    .containers {
      max-width: 520px;
      padding: 40px 25px;
      background: rgba(255, 255, 255, 0.08);
      border-radius: 16px;
      backdrop-filter: blur(10px);
      box-shadow: 0 25px 50px rgba(0, 0, 0, 0.3);
      animation: float 4s ease-in-out infinite;
    }
 
        @keyframes float {
      0% { transform: translateY(0); }
      50% { transform: translateY(-10px); }
      100% { transform: translateY(0); }
    }
 
    .error-code {
      font-size: 110px;
      font-weight: 700;
      line-height: 1;
      background: linear-gradient(90deg, #051f40, #005edb);
      color: #ffffff;
      margin-bottom: 10px;
    }
 
    h1 {
      font-size: 26px;
      font-weight: 600;
      margin-bottom: 12px;
    }
 
    p {
      font-size: 15px;
      opacity: 0.9;
      margin-bottom: 30px;
    }
 
    .actions {
      display: flex;
      justify-content: center;
      gap: 15px;
      flex-wrap: wrap;
    }
 
    .btn {
      text-decoration: none;
      padding: 12px 26px;
      border-radius: 30px;
      font-size: 14px;
      font-weight: 500;
      transition: all 0.3s ease;
    }
 
    .btn-primary {
      background: #051f40;
      color: #ffffff;
    }
 
    .btn-primary:hover {
      background: #005edb;
      transform: translateY(-2px);
    }
 
    .btn-outline {
      border: 1px solid #ffffff;
      color: #ffffff;
    }
 
    .btn-outline:hover {
      background: #ffffff;
      color: #051f40;
      transform: translateY(-2px);
    }
 
    footer {
      margin-top: 30px;
      font-size: 12px;
      opacity: 0.7;
    }
 
    @media (max-width: 480px) {
      .error-code {
        font-size: 90px;
      }
 
      h1 {
        font-size: 22px;
      }
    }