diff --git a/lang/de.css b/lang/de.css
new file mode 100644
index 0000000..9bd3e9f
--- /dev/null
+++ b/lang/de.css
@@ -0,0 +1,4 @@
+:lang(de) .theorem::before { content: 'Satz ' counter(theorem) '. ' !important; }
+:lang(de) .lemma::before { content: 'Lemma ' counter(theorem) '. ' !important; }
+:lang(de) .proof::before { content: 'Beweis. ' attr(title) !important; }
+:lang(de) .definition::before { content: 'Definition ' counter(definition) '. ' !important; }
diff --git a/lang/fr.css b/lang/fr.css
new file mode 100644
index 0000000..9751edf
--- /dev/null
+++ b/lang/fr.css
@@ -0,0 +1,4 @@
+:lang(fr) .theorem::before { content: 'Théorème ' counter(theorem) '. ' !important; }
+:lang(fr) .lemma::before { content: 'Lemme ' counter(theorem) '. ' !important; }
+:lang(fr) .proof::before { content: 'Démonstration. ' attr(title) !important; }
+:lang(fr) .definition::before { content: 'Définition ' counter(definition) '. ' !important; }
diff --git a/lang/it.css b/lang/it.css
new file mode 100644
index 0000000..ae0b62d
--- /dev/null
+++ b/lang/it.css
@@ -0,0 +1,4 @@
+:lang(fr) .theorem::before { content: 'Teorema ' counter(theorem) '. ' !important; }
+:lang(fr) .lemma::before { content: 'Lemma ' counter(theorem) '. ' !important; }
+:lang(fr) .proof::before { content: 'Dimostrazione. ' attr(title) !important; }
+:lang(fr) .definition::before { content: 'Definizione ' counter(definition) '. ' !important; }