.acts-join-form button:disabled {
  opacity: 0.60;
}

.acts-loader {
  border: 2px solid #f3f3f3;
  border-radius: 50%;
  border-top: 2px solid #3498db;
  width: 15px;
  height: 15px;
  animation: acts-loader-spin 2s linear infinite;
  z-index: 2;
  display: inline-block;
  vertical-align: middle;
}

@keyframes acts-loader-spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}