.gran-titulo-nosotros{
  position: relative;
  overflow: hidden;
  margin: 20px auto;
  background:rgba(255, 255, 255, 0.009);
  -webkit-backdrop-filter: blur(4px) brightness(0.8);
  border-top: 1px solid rgba(255,255,255,0.3);
  border-bottom: 0.3px solid rgba(255, 255, 255, 0.171);
  max-width: 230px; /* ajustable */
  border-radius: 5px;
  backdrop-filter: blur(5px) brightness(0.7);
  color:#ffffff
}

/* Shine effect: moving highlight */
.gran-titulo-nosotros::before {
  content: "";
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    120deg,
    transparent 35%,
    rgba(255, 255, 255, 0.157) 42% 50%,
    transparent 60%
  );
  transform: skewX(-20deg);
  animation: shine 4s infinite;
}
@keyframes shine {
  0% {
    left: -100%;
  }
  100% {
    left: 110%;
  }
}