* {
  box-sizing: border-box;
}

body {
  background-color: #f1f1f1;
}

#regForm {
  background-color: #ffffff;
  margin: 10px auto;
  font-family: Raleway;
  padding: 18px;
  width: auto;
  min-width: 300px;
}

h1 {
  text-align: center;  
}

input {
  padding: 20px;
  width: 335px;
  border-radius: 15px;
  font-size: 17px;
  font-family: Raleway;
  border: 3px solid #aaaaaa;
}

/* Mark input boxes that gets an error on validation: */
input.invalid {
  background-color: #ffdddd;
}



button {
  background-color: #4CAF50;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  font-size: 25px;
  font-family: Raleway;
  cursor: pointer;
  margin: 10px;
}

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;
}
form .button-m{
  margin-top: 35px;
  line-height: 0;
}