.t-btnflex {
  position: relative;
  overflow: hidden;
  box-shadow: 0 6px 18px -8px rgba(0, 0, 0, 0.4);
}
.t-btnflex::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: linear-gradient(180deg, rgba(255,255,255,0.14) 0%, rgba(255,255,255,0.04) 45%, rgba(0,0,0,0.06) 100%);
  pointer-events: none;
}