* {
  box-sizing: border-box;
}

body {
  background-color: #fff;
}

#regForm {
  background-color: #eee;
  margin: 100px auto;
  font-family: "Open Sans", open-sans, sans-serif;
  padding: 40px;
  width: 70%;
  min-width: 300px;
}

h1 {
  text-align: center;  
}

form p { 
  padding: 10px 0; 
  line-height: 34px;
}
form p b {
  font-weight: 700;
}

input {
  padding: 10px;
  width: 100%;
  font-size: 17px;
  font-family: "Open Sans", open-sans, sans-serif; 
  border: 1px solid #aaaaaa;
  display: inline-block;
}
input[type=radio] {
  width: 25px;
  height: 25px;
  position: relative;
}

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

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

button {
  background-color: #AA0000;
  color: #ffffff;
  border: none;
  padding: 10px 20px;
  font-size: 17px;
  font-family: "Open Sans", open-sans, sans-serif; 
  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;
  display: none; /* temporary hide */
}

.step.active {
  opacity: 1;
}

/* Mark steps that are finished + valid: */
.step.finish {
  background-color: #04AA6D;
}