4px 6px rgba(0, 0, 0, 0.1);
      }
      .email-header {
        background-color: #007bff;
        color: #ffffff;
        text-align: center;
        padding: 20px 0;
      }
      .email-header h1 {
        margin: 0;
        font-size: 24px;
      }
      .email-body {
        padding: 20px;
        color: #333333;
        line-height: 1.6;
      }
      .email-body p {
        margin: 15px 0;
      }
      .cta-button {
        display: block;
        width: 200px;
        margin: 20px auto;
        p