#myBtn {
  display: block;
  position: fixed;
  bottom: 15px;   /* sits just above the Smartsupp widget button */
  right: 10px;
  z-index: 999;
  width: 180px;
  height: 180px;
  padding: 0;
  margin: 0;
  border: none;
  outline: none;
  background-color: transparent;
  cursor: pointer;
  transition: transform 0.2s ease;
}

#myBtn:hover {
  transform: scale(1.05);
}

#myBtn iframe {
  width: 100% !important;
  height: 100% !important;
  border: none;
  background: transparent;
  pointer-events: auto;
}

.circle {
  width: 320px;
  height: 320px;
  -moz-border-radius: 50%;
  -webkit-border-radius: 50%;
  border-radius: 50%;
  overflow: hidden;
  position: relative;
}