.marquee {
  position: relative;
  width: 100vw;
  max-width: 100%;
  height: 125px;
  overflow-x: hidden;
}

.track {
  position: absolute;
  white-space: nowrap;
  will-change: transform;
  animation: marquee 40s linear infinite;
}

@keyframes marquee {
  from { transform: translateX(+100%); }
  to { transform: translateX(-100%); }
}