diff --git a/2021-sein/leaflet b/2021-sein/leaflet
index 97eec72..e20c0c8 100644
--- a/2021-sein/leaflet
+++ b/2021-sein/leaflet
@@ -1,24 +1,39 @@
-
-
-
-
- Step1.Leaflet????????????????????|Leflet???|??????????
-
-
-
-
-
-
-
-
+https://a.tile.openstreetmap.org/
+[ ?? :z]/[ ?? : x ]/[ ?? : y ].png
+
+
+/* ??????????? */
+var mymap = L.map( mymap ).
+setView([38.8904144 139.8223154], 16)
+
+
+/* ??????? */
+data = {
+"type": "FeatureCollection",
+"features": [
+{
+"type": "Feature",
+"geometry":
+{
+"type": "Point",
+"coordinates": [38.8904144 139.8223154]
+},
+"properties":
+{
+"name": " ???????? ",
+}
+},
+{
+"type": "Feature",
+"geometry":
+{
+"type": "Point",
+"coordinates": [38.921813,139.846003]
+},
+"properties":
+{
+"name": " ??? ",
+}
+}
+]
+}