hextra/assets/css/components/code-copy.css

@supports (
  (-webkit-backdrop-filter: blur(1px)) or (backdrop-filter: blur(1px))
) {
  .hextra-hextra-code-copy-btn {
    @apply hx-backdrop-blur-md hx-bg-opacity-[.85] dark:hx-bg-opacity-80;
  }
}