.butterflys {
  width: 100%;
  height: 100vh;
  position: relative;
}

#butterfly1 {
  position: absolute;
  top: 100px;
  right: 50px;
  width: 200px;
  height: 200px;
  animation: fly 10s ease 0s infinite;
  opacity: 0;
}
@keyframes fly {
  0% {
    opacity: 0;
    transform: translateX(0);
  }
  50% {
    opacity: 1;
  }
  75% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translateX(-800px);
  }
}
#butterfly2 {
  position: absolute;
  bottom: 100px;
  right: 50px;
  width: 200px;
  height: 200px;
  animation: fly2 7s linear infinite;
  opacity: 0;
}

@keyframes fly2 {
  0% {
    transform: translateY(0) translateX(-100px);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  70% {
    opacity: 1;
  }
  100% {
    transform: translateY(-80vh) translateX(-500px);
    opacity: 0;
  }
}
#butterfly3 {
  position: absolute;
  bottom: 59px;
  right: 28px;
  width: 200px;
  height: 200px;
}
#butterfly4 {
  position: absolute;
  bottom: 100px;
  left: 50px;
  width: 200px;
  height: 200px;
  animation: fly3 7s linear infinite;
  opacity: 0;
}

@keyframes fly3 {
  0% {
    transform: translateY(0) translateX(20px);
    opacity: 0;
  }
  50% {
    opacity: 1;
  }
  70% {
    opacity: 1;
  }
  100% {
    transform: translateY(-80vh) translateX(200px);
    opacity: 0;
  }
}
#butterfly5 {
  position: absolute;
  bottom: 67px;
  left: -80px;
  width: 200px;
  height: 200px;
}

#butterfly6 {
  position: absolute;
  top: 64px;
  left: 117px;
  width: 200px;
  height: 200px;
}

#butterfly7 {
  position: absolute;
  top: 90px;
  left: 19px;
  width: 200px;
  height: 200px;
  transform: rotate(20deg);
}