.falling {
	height: 0;
    text-align: center;
	position: fixed; z-index: 100;
}
.falling span {
    display: inline-block;
    width: 20px;
    height: 20px;
	margin: -280px 40px 54px  -34px;
	background: url('img/ladybug.png');
	position: relative;
	z-index: -1;
	margin-left: 30px;
    animation: falling 25s infinite  linear;
}
@keyframes falling {
  0% {
    opacity: 1;
    transform: translate(0, 0px) rotateZ(0deg);
  }
  75% {
    opacity: 1;
  }
  100% {
    opacity: 0;
    transform: translate(150px, 1200px) rotateZ(360deg);
  }
}