Refactor heatmap UI: adjust widths of hand and finger select elements for improved responsiveness

Author: RIGAT-Pierre-andre-2326090par

assets/css/heatmap.css

@@ -195,6 +195,11 @@
     .heatmap-legend { font-size: 10px; }
     .heatmap-gradient { width: 60px; height: 8px; }
     #interface { gap: 1em; }
+    #hand-select { width: 12em }
+    #finger-select { width: 6em }
+}
+
+@media (max-width: 360px) {
     #hand-select { width: 11em }
     #finger-select { width: 5em }
 }