.logo-scroll {
  padding: 50px 0;
  mix-blend-mode: darken;
}
.logo-row { overflow: hidden; }
.logo-row + .logo-row { margin-top: 30px; }
.logo-track {
  display: flex;
  width: max-content;
  animation: logo-scroll 20s linear infinite;
}
.logo-track img {
  height: 70px;
  width: auto;
  flex-shrink: 0;
  margin: 0 20px;
}
.logo-row--rev .logo-track { animation-direction: reverse; }
@keyframes logo-scroll { to { transform: translateX(-50%); } }

@media screen and (max-width: 640px) {
  .logo-row + .logo-row { margin-top: 20px; }
  .logo-track img { height: 35px; margin: 0 10px; }
}