.shiny-text {
  font-size: 3rem;
  font-weight: 700;
  color: #fff;
  position: relative;
  display: inline-block;
  overflow: hidden;
}

.shiny-text::before {
  content: "";
  position: absolute;
  top: 0;
  left: -75%;
  height: 100%;
  width: 50%;
  background: linear-gradient(
    120deg,
    transparent 0%,
    rgba(255,255,255,0.6) 50%,
    transparent 100%
  );
  transform: skewX(-25deg);
}

.shiny-text:hover::before {
  animation: shine 2.8s forwards;
}

@keyframes shine {
  0% { left: -75%; }
  100% { left: 125%; }
}