Update app.css

app.css

@@ -205,4 +205,28 @@ footer, .footer, div[class*="footer"], #footer {
 
 #code-display.visible {
     display: block;
+}
+
+
+.session-history {
+    height: 700px;
+    overflow-y: auto;
+}
+
+.prompt-card {
+    background: white;
+    border: 1px solid #eee;
+    border-radius: 8px;
+    padding: 15px;
+    cursor: pointer;
+    transition: all 0.3s ease;
+}
+
+.prompt-card:hover {
+    transform: translateY(-2px);
+    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
+}
+
+#code-display {
+    display: none;
 }