diff --git a/style/style.css b/style/style.css
index 5803ae6..684f4b4 100644
--- a/style/style.css
+++ b/style/style.css
@@ -66,6 +66,10 @@ button {
   font-weight: bold;
 }
 
+canvas {
+  vertical-align: middle;
+}
+
 button.upload {
   padding: 3px 0;
   color: blue;