.kv {
  position: relative;
  height: 100vh
}
.kv.go {
  height: auto;
  background: linear-gradient(to right, #3153F8 0%, #3153F8 50%, #9747FF 100%);
}
.kv__lottie {
  width: 100%;
  height: auto;
}
.kv__lottie svg {
  display: block;
  width: 100% !important;
  height: auto !important;
}

@media (min-width: 769px) {
  .header {
    transform: translateY(calc(-100% - 100px));
    transition: transform 0.4s ease, margin-top 0.4s ease;
  }

  .header.go {
    transform: translateY(0);
  }
}

@media (max-width: 768px) {
  .kv.go {
    background: linear-gradient(to right, #3153F8 0%, #9747FF 100%);
  }
}