diff --git a/artemis.css b/artemis.css
index a628464..94dd7e3 100644
--- a/artemis.css
+++ b/artemis.css
@@ -7,6 +7,10 @@
     font-family: "游明朝", "Yumincho", "ヒラギノ明朝　ProN W3", "Hiragino Mincho ProN", "HG明朝E", "MS 明朝", selif;
 }
 
+div.leaflet-popup-content img{
+    max-width: 300px;
+    max-height: 300px;
+}
 
 #aegis { 
     width: 50vw;