add

static/style.css

@@ -689,4 +689,39 @@ body, html {
 
 .graph-generate-btn:active {
     transform: translateY(0);
+}
+
+.download-btn {
+    padding: 8px 16px;
+    background: #4CAF50;
+    color: white;
+    border: none;
+    border-radius: 4px;
+    cursor: pointer;
+    font-size: 14px;
+    transition: all 0.3s;
+}
+
+.download-btn:hover {
+    background: #45a049;
+    transform: translateY(-2px);
+    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
+}
+
+.download-btn:active {
+    transform: translateY(0);
+}
+
+.results-container {
+    min-height: 200px;
+    background: rgba(255, 255, 255, 0.9);
+    border-radius: 8px;
+    padding: 20px;
+    margin-top: 20px;
+}
+
+#downloadSection {
+    padding-top: 15px;
+    border-top: 1px solid #eee;
+    margin-top: 15px;
 }