sform: translate(100%, 0);
  -webkit-animation: box1 var(--duration) linear infinite;
  animation: box1 var(--duration) linear infinite;
}

.boxes .box:nth-child(2) {
  transform: translate(0, 100%);
  -webkit-animation: box2 var(--duration) linear infinite;
  animation: box2 var(--duration) linear infinite;
}

.boxes .box:nth-child(3) {
  transform: translate(100%, 100%);
  -webkit-animation: box3 var(--duration) linear infinite;
  animation: box3 var(--duration) linear infinite;
}

.boxes .box:nth-child(4