diff --git a/html/style.css b/html/style.css
index f3fa03b..08c29fb 100644
--- a/html/style.css
+++ b/html/style.css
@@ -106,4 +106,7 @@ img {
   max-width: 100%;
   height: auto;
   width: auto;
+  margin-left: auto;
+  margin-right: auto;
+  display: block;
 }