.help-btn {
      background-color: #000;
      color: #fff; 
      border: none;
      border-radius: 50%;
      width: 30px;
      height: 30px;
      font-size: 18px;
      font-weight: 300;                /* Fuente más delgada */
      font-family: Arial, sans-serif; /* Fuente legible */
      cursor: pointer;
    }

      .modal {
      display: none;
      position: fixed;
      z-index: 999;
      left: 0;
      top: 0;
      width: 100vw;
      height: 100vh;
      background-color: rgba(0, 0, 0, 0.6);
      justify-content: center;
      align-items: center;
    }

    .modal-content {
      background-color: #555555;
      padding: 20px;
      border-radius: 10px;
      width: 90%;
      max-width: 400px;
      box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
      text-align: center;
      position: relative;
    }

  .modal-content h2 {
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 27px;
      margin-bottom: 10px;
      font-weight: bold;
      color: #28a745;
    }
 
    .check-img {
      width: 27px;
      height: 27px;
      margin-left: 10px;
      vertical-align: middle;
    }

     .close-btn {
      position: absolute;
      top: 10px;
      right: 15px;
      font-size: 25px;
      cursor: pointer;
      color: #ebebeb;
    }

    .close-btn:hover {
      color: #fff;
    }

    @keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.blinking {
  animation: blink 1s infinite;
}

    @media (max-width: 480px) {
      .modal-content h2 {
        font-size: 23px;
      }
      .check-img {
        width: 25px;
        height: 25px;
        margin-left: 8px;
      }
    }