MediaWiki:InfoBox.css

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.mw-custom-note {
  border: 1px solid #e5e7eb; /* Tailwind gray-200 */
  background-color: #f9fafb; /* Tailwind gray-50 */
  color: #374151; /* Tailwind gray-700 */
  border-radius: 0.5rem; /* rounded-lg */
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05); /* subtle shadow */
  margin: 1rem 0;
  max-width: 100%;
}

.mw-custom-note .card-header {
  background-color: #f3f4f6; /* Tailwind gray-100 */
  color: #111827; /* Tailwind gray-900 */
  font-size: 1rem; /* text-base */
  padding: 0.75rem 1rem; /* py-3 px-4 */
  border-bottom: 1px solid #e5e7eb; /* gray-200 */
  border-radius: 0.5rem 0.5rem 0 0;
}

.mw-custom-note .card-body {
  padding: 1rem; /* p-4 */
  font-size: 0.875rem; /* text-sm */
  line-height: 1.5;
}