.logo {
  display: block;
  width: 48px;
  height: auto;
}

.logo svg {
  display: block;
  width: 100%;
  height: auto;
}

.logo__color {
  animation: logoColor 7s infinite;
}

@keyframes logoColor {
  from { fill: #3791FF; }
  25%  { fill: #9D69F6; }
  50%  { fill: #83C867; }
  75%  { fill: #F2B546; }
  to   { fill: #3791FF; }
}

@media (prefers-reduced-motion: reduce) {
  .logo__color {
    animation: none;
  }
}