input {
  padding: 10px;
  width: 100%;
  /*font-size: 17px;
            font-family: Raleway;*/
  border: 1px solid #aaaaaa;
}

  /* Mark input boxes that gets an error on validation: */
  input.invalid {
    /*background-color: #ffdddd;*/
    border: solid 1px red;
  }
  
  select.invalid {
    /*background-color: #ffdddd;*/
    border: solid 1px red;
  }

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

button {
  background-color: #4CAF50;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  /*font-size: 17px;
            font-family: Raleway;*/
  cursor: pointer;
}

  button:hover {
    opacity: 0.8;
  }

#prevBtn {
  background-color: #bbbbbb;
}

/* 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;
}

  .step.active {
    opacity: 1;
  }

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

.circle {
  width: 25px;
  height: 25px;
  border-radius: 50%;
}