diff --git a/main.js b/main.js
index b6fa53b..c327d85 100644
--- a/main.js
+++ b/main.js
@@ -812,7 +812,7 @@
     dialog .preview,
     .swiper {
       max-width: 1000px;
-      max-height: 600px;
+      max-height: 500px;
     }
 
     .swiper-button-next,
@@ -821,6 +821,17 @@
       -webkit-user-select: none;
     }
 
+    .swiper-wrapper {
+      align-items: center;
+    }
+
+    .swiper-wrapper > img.swiper-slide {
+      width: 100%;
+      max-height: 500px;
+      object-fit: contain;
+      object-position: center;
+    }
+
     button.button-delete {
       padding: 0;
       border: 0;