diff --git a/web.css b/web.css
index 4d66dfad1..b6d76e95c 100644
--- a/web.css
+++ b/web.css
@@ -63,6 +63,8 @@ span.hover > img {
   left: 0;
   right: 0;
   margin: auto;
+  width: auto;
+  height: auto;
   max-width: 100%;
   max-height: 100%;
   box-shadow: 5px 5px 20px rgba(0,0,0,0.4);