diff --git a/web/public/css/tfm.css b/web/public/css/tfm.css
index f860494..c7f1c59 100644
--- a/web/public/css/tfm.css
+++ b/web/public/css/tfm.css
@@ -186,3 +186,14 @@ form {
 .tanzaku.selected {
 	background-color: #0002;
 }
+
+.button-flex {
+	position: sticky;
+	position: -webkit-sticky;
+	bottom: 0;
+	left: 0;
+	right: 0;
+	margin: 0;
+	padding: .5rem 0;
+	background-color: #eee;
+}