diff --git a/web/src/styles.css b/web/src/styles.css
index 7857ac2..4a49815 100644
--- a/web/src/styles.css
+++ b/web/src/styles.css
@@ -2306,6 +2306,9 @@ input.leaf-rename:focus {
   display: flex;
   flex-direction: column;
   min-width: 0;
+  max-width: 820px;
+  margin-inline: auto;
+  width: 100%;
 }
 
 .structured-activity {