body.popup-opened #authors-top:after {
  content: '';
  display: block;
  position: fixed;
  z-index: 1500;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.7);
}

.feedback-popup {
  position: fixed;
  z-index: 2000;
  top: 50%;
  left: 50%;
  width: 300px;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  -o-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.subscribe-popup {
    z-index: 2000; !important;
}