/* Mark input boxes that gets an error on validation: */
input.invalid {

}

/* Hide all steps by default: */
.tab {
  display: none;
}

/* Make circles that indicate the steps of the form: */
.step {
  height: 15px;
  width: 15px;
  margin: 0 2px;
  background-color: #bbbbbb;
  border: none;
  border-radius: 50%;
  display: inline-block;
  opacity: 0.5;
}

/* Mark the active step: */
.step.active {
  opacity: 1;
  width: 67px;
  background: none;
}

/* Mark the steps that are finished and valid: */
.step.finish {
  /*background-color: #4CAF50;*/
}

.loader {
  margin: 0 auto;
  border: 10px solid #f3f3f3; /* Light grey */
  border-top: 10px solid #44495ce0;
  border-radius: 50%;
  width: 60px;
  height: 60px;
  animation: spin 2s linear infinite;
}

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