/* Custom Brain Icon for Dual N-Back */
.iconfont.icon-brain::before {
  content: "";
  display: inline-block;
  width: 1em;
  height: 1em;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='currentColor'%3E%3Cpath d='M12 2C8.13 2 5 5.13 5 9c0 2.38 1.19 4.47 3 5.74V17c0 .55.45 1 1 1h6c.55 0 1-.45 1-1v-2.26c1.81-1.27 3-3.36 3-5.74 0-3.87-3.13-7-7-7zm2.85 11.1l-.85.6V16h-4v-2.3l-.85-.6A4.97 4.97 0 0 1 7 9c0-2.76 2.24-5 5-5s5 2.24 5 5c0 1.63-.8 3.16-2.15 4.1z'/%3E%3Cpath d='M9 9c0-1.66 1.34-3 3-3s3 1.34 3 3h-1.5c0-.83-.67-1.5-1.5-1.5s-1.5.67-1.5 1.5H9z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
}