.js-progress-bar {
    display: block;
    text-align: center;
    width: 0;
    height: 3px;
    background: green;
    margin-top:0.5%;
    transition: width .3s;
}
.js-progress-bar.hide {
    opacity: 0;
    transition: opacity 1.3s;
}
span.preview-span, legend.control-label{
  margin-bottom: 5px;
  display: inline-block;
  font-weight: bold;
  font-size: 1em;
  border-bottom: none;
}