body {
  background-attachment: fixed;
}

.overlay {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: hidden;
  opacity: 0;
  z-index: 10;
}
.overlay:target {
  visibility: visible;
  opacity: 1;
}

.popup {
  /*margin: 70px auto;*/
  padding: 20px;
  background: #fff;
  border-radius: 5px;
  top: 2%;
  bottom: 2%;
  left: 2%;
  right: 2%;
  position: fixed;
  transition: all 5s ease-in-out;
  z-index: 10;
}

.popup h2 {
  margin-top: 0;
  color: #333;
  font-weight: bold;
}

.popup .content h3 {
  font-weight: bold;
}

.popup .content h4 {
  font-weight: bold;
}
.popup .close {
  position: absolute;
  top: 20px;
  right: 30px;
  transition: all 200ms;
  font-size: 30px;
  font-weight: bold;
  text-decoration: none;
  color: #333;
}
.popup .close:hover {
  color: #06D85F;
}
.popup .content {
  max-height: 90%;
  overflow: auto;
  text-transform: none;
  font-size: 75%;
  font-family: "Helvetica";
}

.tiny {
  font-size: 65%;
  text-align: left;
}