.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(75deg, rgba(255,255,255,.6), transparent);
  border: 1px solid rgba(0, 0, 0, 0.8);
  pointer-events: none;
  border-radius: inherit;
}

.hero {
  position: relative;
  overflow: hidden;
  padding: 1px;
}