#sheepmenu {
  width: 100px;
  position: fixed;
  bottom: -20px;
  right: -20px;
  border-top-left-radius: 80px;
  box-shadow: 0 0 10px rgba(0,0,0,0.5);
  z-index: 1000;
  transition: bottom .5s, right .5s, box-shadow .5s, border-radius .5s;
}
#sheepmenu:hover {
  bottom: -10px;
  right: 0;
  border-top-left-radius: 100px;
  box-shadow: 0 0 15px rgba(0,0,0,0.5);
}
#sheepmenu:active {
  box-shadow: 0 0 2px rgba(0,0,0,0.5);
  transition: box-shadow .2s;
}
.sheepmenu {
  position: fixed;
  z-index: 1000;
  animation: wow 0.3s cubic-bezier(0.215, 0.61, 0.355, 1);
  right: 0;
  bottom: calc(50vh - 50vw);
  border-top-left-radius: 0;
  box-shadow: none;
  width: 100vw;
}
@keyframes wow {
  0% {
    bottom: -10px;
    border-top-left-radius: 100px;
    box-shadow: 0 0 2px rgba(0,0,0,0.5);
    width: 100px;
  }
  100% {
    bottom: calc(50vh - 50vw);
    border-top-left-radius: 0;
    box-shadow: none;
    width: 100vw;
  }
}