diff --git a/viz/static/js/scene.js b/viz/static/js/scene.js
index 000bb5e..6468c69 100644
--- a/viz/static/js/scene.js
+++ b/viz/static/js/scene.js
@@ -191,6 +191,7 @@ fetch('/api/trajectory')
               grid: { color: '#111' },
             },
             y: {
+              suggestedMin: 0,
               title: { display: true, text: 'm', color: '#445' },
               ticks: { color: '#445', font: { size: 9 } },
               grid: { color: '#111' },
diff --git a/viz/static/trajectory.html b/viz/static/trajectory.html
index aa400ab..0026bc1 100644
--- a/viz/static/trajectory.html
+++ b/viz/static/trajectory.html
@@ -8,7 +8,7 @@
     body { background: #06060f; color: #ccc; font-family: 'Courier New', monospace;
            display: flex; flex-direction: column; height: 100vh; overflow: hidden; }
 
-    #viewer { position: relative; flex: 0 0 62vh; }
+    #viewer { position: relative; flex: 0 0 55vh; }
     #viewer canvas { display: block; width: 100% !important; height: 100% !important; }
 
     #legend {