body {
    font-family: 'Kanit', sans-serif;
}
        
@keyframes shine {
  100% {
    left: 125%;
  }
}

.btn-shine {
  position: relative;
  overflow: hidden; 
  isolation: isolate; 
}

.btn-shine::after {
  content: "";
  position: absolute;
  top: 0;
  left: -75%; 
  width: 50%;
  height: 100%;
  background: linear-gradient(
    to right,
    rgba(255, 255, 255, 0) 0%,
    rgba(255, 255, 255, 0.3) 50%,
    rgba(255, 255, 255, 0) 100%
  );
  transform: skewX(-25deg);
  transition: none;
  animation: shine 3s infinite; 
  z-index: -1;
}