diff --git a/style/shiny/single.css b/style/shiny/single.css
index 210a000..284cdde 100644
--- a/style/shiny/single.css
+++ b/style/shiny/single.css
@@ -6,8 +6,14 @@
   --image-width: 1000px;
 }
 
+body {
+  display: grid;
+  min-height: 100vh;
+}
+
 .page {
   max-width: var(--image-width);
+  align-self: center;
 }
 
 #mainfig {