Fix #5838

src/client/style.scss

@@ -340,6 +340,19 @@ a {
 	}
 }
 
+@keyframes spin {
+	0% { transform: rotate(0deg); }
+	100% { transform: rotate(360deg); }
+}
+
+@keyframes jump {
+	0% { transform: translateY(0); }
+	25% { transform: translateY(-16px); }
+	50% { transform: translateY(0); }
+	75% { transform: translateY(-8px); }
+	100% { transform: translateY(0); }
+}
+
 @keyframes blink {
 	0% { opacity: 1; }
 	30% { opacity: 1; }