html, body { 
    margin: auto;
	padding: auto;
}

.nav-div {
    padding: 20px;
}

#open-popup {padding:20px;}
.white-popup {
  position: relative;
  background: #FFF;
  padding: 40px;
  width: auto;
  max-width: 200px;
  margin: 20px auto;
  text-align: center;
}

.form-input1 {
  width: 300px;
  font-size: 16px;
}

.form-label1 {
  display: inline-block;
  min-width: 150px;
  vertical-align: top;
}

.form-button {
  min-width: 200px;
  font-size: 16px;
  border: none;
}