body {
      margin: 0;
      padding: 0;
      background: #e9ebee;
      font-family: Helvetica, Arial, sans-serif;
      display: flex;
      justify-content: center;
      align-items: center;
      height: 100vh;
    }

    .ban-container {
      background: #fff;
      border: 1px solid #dddfe2;
      box-shadow: 0 0 8px rgba(0, 0, 0, 0.1);
      width: 460px;
      padding: 20px;
      text-align: left;
    }

    .fb-header {
      background: #3b5998;
      color: white;
      font-size: 24px;
      font-weight: bold;
      padding: 10px 16px;
      margin: -20px -20px 20px -20px;
    }

    .ban-title {
      font-weight: bold;
      font-size: 18px;
      margin-bottom: 10px;
    }

    .ban-text {
      font-size: 14px;
      color: #1c1e21;
      line-height: 1.5;
    }

    .ban-text a {
      color: #365899;
      text-decoration: none;
    }

    .ban-text a:hover {
      text-decoration: underline;
    }

    .login-button {
      display: block;
      background: #4267b2;
      color: white;
      font-weight: bold;
      padding: 10px;
      text-align: center;
      margin: 20px auto 10px auto;
      width: 100%;
      border: none;
      font-size: 15px;
      border-radius: 2px;
      cursor: not-allowed;
    }

    .alt-user {
      text-align: center;
      font-size: 12px;
      color: #90949c;
    }