diff --git a/app/javascript/flavours/glitch/styles/components.scss b/app/javascript/flavours/glitch/styles/components.scss
index 3c499069f2..15af2e10fa 100644
--- a/app/javascript/flavours/glitch/styles/components.scss
+++ b/app/javascript/flavours/glitch/styles/components.scss
@@ -7986,6 +7986,8 @@ img.modal-warning {
   position: relative;
   background: $base-shadow-color;
   max-width: 100%;
+  max-height: max(400px, 60vh);
+  margin-inline: auto;
   border-radius: 8px;
   box-sizing: border-box;
   color: $white;
diff --git a/app/javascript/flavours/glitch/styles_new/mastodon/components.scss b/app/javascript/flavours/glitch/styles_new/mastodon/components.scss
index 61faaf1f32..cd0029b922 100644
--- a/app/javascript/flavours/glitch/styles_new/mastodon/components.scss
+++ b/app/javascript/flavours/glitch/styles_new/mastodon/components.scss
@@ -7809,6 +7809,8 @@ img.modal-warning {
   color: var(--color-text-on-media);
   background: var(--color-bg-media);
   max-width: 100%;
+  max-height: max(400px, 60vh);
+  margin-inline: auto;
   border-radius: 8px;
   box-sizing: border-box;
   display: flex;