body {
  margin: 0;
  padding: 0;
  font-family: Arial, sans-serif;
  display: flex;
  justify-content: center;
  /* Center the flex items horizontally */
  align-items: center;
  /* Center the flex items vertically */
  min-height: 100vh;
  /* Ensure the container takes up at least the full viewport height */
  background-color: #f1f1f1;
  /* Set a nice background color */
}

.container {
  background-color: #fff;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
  padding: 20px;
  max-width: 400px;
  width: 100%;
  text-align: center;
  margin-top: 20px;
  /* Add some space between header and container */
}

.header {
  text-align: center;
  padding: 20px 0;
}

.centered-image {
  display: block;
  margin: 0 auto;
  width: 94px;
  height: auto;
}

.page-title {
  margin-top: 10px;
  font-size: 24px;
  color: #007bff;
  font-weight: bold;
}

.upload-area {
  border: 2px dashed #ccc;
  border-radius: 8px;
  padding: 20px;
  cursor: pointer;
}

.file-name {
  margin-top: 10px;
  font-size: 22px;
  color: #666;
}

.btn-activate {
  margin-top: 20px;
  background-color: #007bff;
  color: #fff;
  border: none;
  padding: 10px 20px;
  border-radius: 4px;
  cursor: pointer;
}

.btn-activate:hover {
  background-color: #0056b3;
}

.btn-activate.disabled-btn {
  background-color: #cbcbcb;
  cursor: not-allowed;
}

.feedback {
  margin-top: 10px;
  font-size: 14px;
  font-weight: bold;
}

.feedback.success {
  color: green;
}

.feedback.error {
  color: red;
}