body {
  background: burlywood;
  width: 100vw;
  overflow: hidden;
}

img {
  max-width: 100%;
}

.gallery {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  margin-top: 5rem;
}
.gallery__image {
  padding: 0.5rem 0.5rem 1.5rem;
  background: white;
  position: relative;
  box-shadow: 0 0 5px rgba(0, 0, 0, 0.5);
  transform-origin: center -5rem;
}
.gallery__image::before {
  content: "";
  display: block;
  height: 10rem;
  width: 2px;
  background: saddlebrown;
  position: absolute;
  bottom: 100%;
  left: 50%;
}
.gallery__image:nth-child(1) {
  animation: 5s infinite bounce;
  animation-name: image1;
  transform: rotate(-10deg);
}
.gallery__image:nth-child(2) {
  animation: 4.5s infinite bounce;
  animation-name: image2;
  transform: rotate(8deg);
}
.gallery__image:nth-child(3) {
  animation: 4s infinite bounce;
  animation-name: image3;
  transform: rotate(-4deg);
}

@keyframes image1 {
  50% {
    transform: rotate(10deg);
  }
}
@keyframes image2 {
  50% {
    transform: rotate(-5deg);
  }
}
@keyframes image3 {
  50% {
    transform: rotate(6deg);
  }
}