.stack {
  position: relative;
  display: flex;
  padding-right: 30px;
  cursor: pointer;
}

#features .row:nth-child(odd) .stack {
  padding-right: 30px;
}

.screenshot {
  position: relative;
  transition: bottom 250ms;
}

.screenshot:nth-child(3) {
  z-index: 4;
  left: -200%;
}

.screenshot:nth-child(2) {
  z-index: 3;
  left: calc(-100% + 10px);
  bottom: 10px;
}
.screenshot:nth-child(1) {
  z-index: 2;
  left: 20px;
  bottom: 20px;
}

/* @keyframes lower {
  from {
    animation-timing-function: ease-in-out;
  }
  to {
    transform: translate(-10px, 10px);
  }
}

@keyframes swap {
  50% {
    z-index: 3;
  }
  67% {
    transform: translate(35px, -125%) rotate(2.5deg);
    z-index: 1;
  }
  100% {
    transform: translate(30px, -30px) rotate(0deg);
    z-index: 0;
  }
} */

@keyframes shift {
  50% {
    transform: translate(-5px, 5px);
  }
  to {
    transform: translate(0, 0);
  }
}

@keyframes fade-out {
  0% {
    /* z-index: 3; */
    bottom: 0;
    opacity: 1;
  }
  100% {
    /* z-index: 0; */
    opacity: 0;
    left: calc(-200% - 10px);
    bottom: -30px;
    scale: 1.05;
  }
}

@keyframes fade-in {
  0% {
    bottom: 30px;
    left: 30px;
    opacity: 0;
    scale: 0.95;
  }
  100% {
    opacity: 1;
    left: 20px;
    bottom: 20px;
    scale: 1.0;
  }
}