.logo {
  position: relative;
  overflow: hidden;
}

.logo::after {
  content: '';
  position: absolute;
  top: -100%;
  left: 150%;
  width: 60%;
  height: 60%;
  background: linear-gradient(
    135deg,
    rgba(255,255,255,0) 0%,
    rgba(255,255,255,0.55) 50%,
    rgba(255,255,255,0) 100%
  );
  transform: skewX(-15deg) skewY(-5deg);
  animation: logo-shine 10s infinite;
  pointer-events: none;
}

@keyframes logo-shine {
  0%   { top: -100%; left: 150%; }
  8%   { top: 150%; left: -100%; }
  100% { top: 150%; left: -100%; }
}