update postcss config for glightbox

assets/scss/buttons.scss

@@ -1,15 +0,0 @@
-.btn {
-  @apply inline-block rounded border border-transparent px-5 py-2 font-semibold capitalize transition;
-}
-
-.btn-sm {
-  @apply rounded-sm px-4 py-1.5 text-sm;
-}
-
-.btn-primary {
-  @apply border-primary bg-primary dark:border-darkmode-primary dark:text-dark text-white dark:bg-white;
-}
-
-.btn-outline-primary {
-  @apply border-dark text-dark hover:bg-dark dark:hover:text-dark bg-transparent hover:text-white dark:border-white dark:text-white dark:hover:bg-white;
-}