diff --git a/TangerineUI-purple.css b/TangerineUI-purple.css
index db39f56..fdc6e57 100644
--- a/TangerineUI-purple.css
+++ b/TangerineUI-purple.css
@@ -1073,6 +1073,7 @@ body.layout-single-column  {
     color: var(--color-content-fg);
     border: 0;
     border-radius: 7px;
+    overflow: hidden;
     font-weight: bold;
     margin-bottom: 10px;
 }
diff --git a/TangerineUI.css b/TangerineUI.css
index f56f505..8cc20a7 100644
--- a/TangerineUI.css
+++ b/TangerineUI.css
@@ -1073,6 +1073,7 @@ body.layout-single-column  {
     color: var(--color-content-fg);
     border: 0;
     border-radius: 7px;
+    overflow: hidden;
     font-weight: bold;
     margin-bottom: 10px;
 }
diff --git a/mastodon/app/javascript/styles/tangerineui-purple/layout-single-column.scss b/mastodon/app/javascript/styles/tangerineui-purple/layout-single-column.scss
index db39f56..fdc6e57 100644
--- a/mastodon/app/javascript/styles/tangerineui-purple/layout-single-column.scss
+++ b/mastodon/app/javascript/styles/tangerineui-purple/layout-single-column.scss
@@ -1073,6 +1073,7 @@ body.layout-single-column  {
     color: var(--color-content-fg);
     border: 0;
     border-radius: 7px;
+    overflow: hidden;
     font-weight: bold;
     margin-bottom: 10px;
 }
diff --git a/mastodon/app/javascript/styles/tangerineui/layout-single-column.scss b/mastodon/app/javascript/styles/tangerineui/layout-single-column.scss
index f56f505..8cc20a7 100644
--- a/mastodon/app/javascript/styles/tangerineui/layout-single-column.scss
+++ b/mastodon/app/javascript/styles/tangerineui/layout-single-column.scss
@@ -1073,6 +1073,7 @@ body.layout-single-column  {
     color: var(--color-content-fg);
     border: 0;
     border-radius: 7px;
+    overflow: hidden;
     font-weight: bold;
     margin-bottom: 10px;
 }