div {
  -webkit-animation: change .5s cubic-bezier(1,.2,.6,1.75) 1s forwards;
          animation: change .5s cubic-bezier(1,.2,.6,1.75) 1s forwards;
}

div:nth-of-type(1) {
  --scale: 1.2;
}

div:nth-of-type(2) {
  --scale: 2.6;
}

div:nth-of-type(3) {
  --scale: 1.8;
}

@-webkit-keyframes change {
  to {
    -webkit-transform: scale(var(--scale));
            transform: scale(var(--scale));
  }
}

@keyframes change {
  to {
    -webkit-transform: scale(var(--scale));
            transform: scale(var(--scale));
  }
}