diff --git a/app/javascript/flavours/glitch/styles/forms.scss b/app/javascript/flavours/glitch/styles/forms.scss
index 63346bb5ca..352567d093 100644
--- a/app/javascript/flavours/glitch/styles/forms.scss
+++ b/app/javascript/flavours/glitch/styles/forms.scss
@@ -23,6 +23,8 @@ code {
   position: relative;
   overflow: hidden;
   height: 160px;
+  max-width: 566px;
+  margin-inline: auto;
 
   &::after {
     content: '';