Update style.css

style.css

@@ -60,4 +60,16 @@ button {
 
 button:hover {
   opacity: 1;
+}
+
+.books li::before {
+  content: "📚";
+}
+
+.hourglass li::before {
+  content: "⌛";
+}
+
+.thought li::before {
+  content: "💭";
 }