diff --git a/.changeset/tiny-actors-eat.md b/.changeset/tiny-actors-eat.md
new file mode 100644
index 00000000..9c02576e
--- /dev/null
+++ b/.changeset/tiny-actors-eat.md
@@ -0,0 +1,5 @@
+---
+'@primer/css': patch
+---
+
+Add responsive `border-radius` story
diff --git a/docs/src/stories/utilities/Border.stories.jsx b/docs/src/stories/utilities/Border.stories.jsx
index fd3a1f8e..68f5e762 100644
--- a/docs/src/stories/utilities/Border.stories.jsx
+++ b/docs/src/stories/utilities/Border.stories.jsx
@@ -2,62 +2,33 @@ export default {
   title: 'Utilities/Border'
 }
 
-export const Default = ({}) => (
-  <span class="color-bg-subtle p-2 border">
-    .border
-  </span>
-)
+export const Default = ({}) => <span class="color-bg-subtle p-2 border">.border</span>
 
 export const Direction = ({}) => (
   <div style={{display: 'inline-flex', flexDirection: 'column', gap: '1rem'}}>
-    <div class="color-bg-subtle p-2 border-left">
-      .border-left
-    </div>
-    <div class="color-bg-subtle p-2 border-top">
-      .border-top
-    </div>
-    <div class="color-bg-subtle p-2 border-bottom">
-      .border-bottom
-    </div>
-    <div class="color-bg-subtle p-2 border-right">
-      .border-right
-    </div>
-    <div class="color-bg-subtle p-2 border-x">
-      .border-x
-    </div>
-    <div class="color-bg-subtle p-2 border-y">
-      .border-y
-    </div>
+    <div class="color-bg-subtle p-2 border-left">.border-left</div>
+    <div class="color-bg-subtle p-2 border-top">.border-top</div>
+    <div class="color-bg-subtle p-2 border-bottom">.border-bottom</div>
+    <div class="color-bg-subtle p-2 border-right">.border-right</div>
+    <div class="color-bg-subtle p-2 border-x">.border-x</div>
+    <div class="color-bg-subtle p-2 border-y">.border-y</div>
   </div>
 )
 
-export const Hide = ({}) => (
-  <span class="color-bg-subtle p-2 border border-top-0">
-    .border-top-0
-  </span>
-)
+export const Hide = ({}) => <span class="color-bg-subtle p-2 border border-top-0">.border-top-0</span>
 
-export const Style = ({}) => (
-  <span class="color-bg-subtle p-2 border border-dashed">
-    .border-dashed
-  </span>
-)
+export const Style = ({}) => <span class="color-bg-subtle p-2 border border-dashed">.border-dashed</span>
 
 export const Rounded = ({}) => (
   <div style={{display: 'inline-flex', flexDirection: 'column', gap: '1rem'}}>
-    <div class="color-bg-subtle p-2 border rounded-0">
-      .rounded-0
-    </div>
-    <div class="color-bg-subtle p-2 border rounded-1">
-      .rounded-1
-    </div>
-    <div class="color-bg-subtle p-2 border rounded-2">
-      .rounded-2
-    </div>
-    <div class="color-bg-subtle p-2 border rounded-3">
-      .rounded-3
-    </div>
-    <div class="color-bg-subtle border circle" style={{display: 'inline-flex', justifyContent: 'center', alignItems: 'center', width: '100px', height: '100px'}}>
+    <div class="color-bg-subtle p-2 border rounded-0">.rounded-0</div>
+    <div class="color-bg-subtle p-2 border rounded-1">.rounded-1</div>
+    <div class="color-bg-subtle p-2 border rounded-2">.rounded-2</div>
+    <div class="color-bg-subtle p-2 border rounded-3">.rounded-3</div>
+    <div
+      class="color-bg-subtle border circle"
+      style={{display: 'inline-flex', justifyContent: 'center', alignItems: 'center', width: '100px', height: '100px'}}
+    >
       .circle
     </div>
   </div>
@@ -65,23 +36,30 @@ export const Rounded = ({}) => (
 
 export const RoundedDirection = ({}) => (
   <div style={{display: 'inline-flex', flexDirection: 'column', gap: '1rem'}}>
-    <div class="color-bg-subtle p-2 border rounded-top-2">
-      .rounded-top-2
-    </div>
-    <div class="color-bg-subtle p-2 border rounded-right-2">
-      .rounded-right-2
-    </div>
-    <div class="color-bg-subtle p-2 border rounded-bottom-2">
-      .rounded-bottom-2
-    </div>
-    <div class="color-bg-subtle p-2 border rounded-left-2">
-      .rounded-left-2
-    </div>
+    <div class="color-bg-subtle p-2 border rounded-top-2">.rounded-top-2</div>
+    <div class="color-bg-subtle p-2 border rounded-right-2">.rounded-right-2</div>
+    <div class="color-bg-subtle p-2 border rounded-bottom-2">.rounded-bottom-2</div>
+    <div class="color-bg-subtle p-2 border rounded-left-2">.rounded-left-2</div>
+  </div>
+)
+
+export const RoundedResponsive = ({}) => (
+  <div
+    class="color-bg-subtle p-2 border rounded-sm-1 rounded-md-2 rounded-lg-3"
+    style={{display: 'inline-flex', flexDirection: 'column', gap: '1rem'}}
+  >
+    <div>.border-left</div>
+    <div class="d-none d-sm-block">.rounded-sm-1</div>
+    <div class="d-none d-md-block">.rounded-md-2</div>
+    <div class="d-none d-lg-block">.rounded-lg-3</div>
   </div>
 )
 
 export const Responsive = ({}) => (
-  <div class="color-bg-subtle p-2 border-left border-sm-top border-md-right border-lg-bottom" style={{display: 'inline-flex', flexDirection: 'column', gap: '1rem'}}>
+  <div
+    class="color-bg-subtle p-2 border-left border-sm-top border-md-right border-lg-bottom"
+    style={{display: 'inline-flex', flexDirection: 'column', gap: '1rem'}}
+  >
     <div>.border-left</div>
     <div class="d-none d-sm-block">.border-sm-top</div>
     <div class="d-none d-md-block">.border-md-right</div>