#section1 {
  height: 30em;
}
#Vendor_Registration {
  background-color: #fff;
  margin: 100px auto;
  padding: 40px;
  width: 100%;
  min-width: 600px;
}
/* Mark input boxes that get errors during validation: */
input.invalid {
  background-color: #ffdddd;
}
/* Hide all steps by default: */
.tab {
  display: none;
}

#prevBtn {
  background-color: #f2f2f2;
  color: #333	
}
/* Step marker: Place in 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;
}