#block-block-12{
  position: fixed;
  right: 50px;
  bottom: 50px;
  z-index: 1000;
}

#startchat {
  border: 2px solid #46c8ca;
  border-radius: 50px 50px 50px 50px;
  padding: 20px 20px 20px 20px;
  z-index: 1000;
  background: white;
  color: #413b58;
}

#overlay {
  position: fixed; /* Sit on top of the page content */
  display: none; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0,0,0,0.5); /* Black background with opacity */
  z-index: 2; /* Specify a stack order in case you're using a different order for other elements */
  cursor: pointer; /* Add a pointer on hover */
}