sheep-btn {
  display: block;
  position: fixed;
  z-index: 1000;
  height: 50px;
  width: 50px;
  border-radius: 50%;
  background-color: rgba(0, 0, 0, 0.4);
  background-size: 45px;
  background-repeat: no-repeat;
  background-position: 50% 80%;
  box-shadow: 0 0 2px rgba(0, 0, 0, 0.5);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  transition: all .2s;
  right: 10px;
  bottom: 10px;
  transform: translateZ(0);
}
sheep-btn, .sheep-blockscreen sheep-btn:hover {
  background-image: url("/A-white.png");
}
sheep-btn:hover {
  background-color: rgba(255,255,255,0.8);
  box-shadow: 0 0 4px rgba(0,0,0,0.5);
  background-image: url("/A-gray2.png");
}
sheep-btn:active {
  box-shadow: 0 0 2px rgba(0,0,0,0.5);
  transform: translateZ(0) scale(0.9);
}
sheep-btn:focus {
  outline: none;
  box-shadow: 0 0 4px rgba(0,0,0,0.5), 0 0 0 5px rgba(79,161,167,0.3);
}
.sheep-blockscreen {
  pointer-events: none;
}
.sheep-blockscreen sheep-btn {
  right: 50%;
  bottom: 50%;
  width: 142vmax;
  height: 142vmax;
  margin: -71vmax;
  background-color: black;
  background-size: 90px;
  background-position: 50% 50%;
  box-shadow: none;
  pointer-events: none;
  transition: all .1s;
}