diff --git a/src/client/theme-default/styles/base.css b/src/client/theme-default/styles/base.css
index af2ed98a0524..da61b764f4f4 100644
--- a/src/client/theme-default/styles/base.css
+++ b/src/client/theme-default/styles/base.css
@@ -247,5 +247,6 @@ mjx-container {
 }
 
 mjx-container > svg {
+  display: inline-block;
   margin: auto;
 }