diff --git a/contents/_includes/patterns/concave-corners.njk b/contents/_includes/patterns/concave-corners.njk
new file mode 100644
index 0000000..7f0ed22
--- /dev/null
+++ b/contents/_includes/patterns/concave-corners.njk
@@ -0,0 +1,6 @@
+
\ No newline at end of file
diff --git a/contents/concave-corners.md b/contents/concave-corners.md
new file mode 100644
index 0000000..1816e03
--- /dev/null
+++ b/contents/concave-corners.md
@@ -0,0 +1,88 @@
+---
+layout: layouts/post.njk
+title: Concave corners
+description: Create concave corners with CSS
+keywords: css border radius, css concave border radius, css concave corners
+---
+
+## HTML
+
+```html
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+ ...
+
+```
+
+## CSS
+
+```css
+.concave-corners {
+ background-color: rgba(0, 0, 0, .3);
+
+ /* Used to position the corners */
+ position: relative;
+}
+.concave-corners__corner {
+ /* Absolute position */
+ position: absolute;
+
+ /* Size */
+ height: 1rem;
+ width: 1rem;
+
+ background: #fff;
+}
+
+.concave-corners__corner--tl {
+ /* Position */
+ left: 0;
+ top: 0;
+
+ /* Border radius */
+ border-radius: 0 0 1rem 0;
+}
+
+.concave-corners__corner--tr {
+ /* Position */
+ right: 0;
+ top: 0;
+
+ /* Border radius */
+ border-radius: 0 0 0 1rem;
+}
+
+.concave-corners__corner--bl {
+ /* Position */
+ bottom: 0;
+ left: 0;
+
+ /* Border radius */
+ border-radius: 0 1rem 0 0;
+}
+
+.concave-corners__corner--br {
+ /* Position */
+ bottom: 0;
+ right: 0;
+
+ /* Border radius */
+ border-radius: 1rem 0 0 0;
+}
+```
+
+{% demo %}
+{% include "patterns/concave-corners.njk" %}
+{% enddemo %}
diff --git a/contents/index.njk b/contents/index.njk
index 11ed38c..678a2fe 100644
--- a/contents/index.njk
+++ b/contents/index.njk
@@ -67,6 +67,12 @@ eleventyExcludeFromCollections: true
Color swatch
+
diff --git a/pages/concave-corners/index.tsx b/pages/concave-corners/index.tsx
deleted file mode 100644
index dcf9565..0000000
--- a/pages/concave-corners/index.tsx
+++ /dev/null
@@ -1,134 +0,0 @@
-import * as React from 'react';
-import Head from 'next/head';
-import { Spacer } from '@1milligram/design';
-
-import { RelatedPatterns } from '../../components/RelatedPatterns';
-import { Pattern } from '../../constants/Pattern';
-import { PatternLayout } from '../../layouts/PatternLayout';
-import BrowserFrame from '../../placeholders/BrowserFrame';
-
-const Details: React.FC<{}> = () => {
- return (
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- ...
-
-`}
- css={`
- :root {
- --concave-corners-background: rgba(0, 0, 0, 0.3);
- --concave-corners-size: 1rem;
- }
-
- .concave-corners {
- background-color: var(--concave-corners-background);
-
- /* Used to position the corners */
- position: relative;
-
- /* Misc */
- height: 100%;
- }
-
- .concave-corners__corner {
- /* Absolute position */
- position: absolute;
-
- /* Size */
- height: var(--concave-corners-size);
- width: var(--concave-corners-size);
-
- background: #fff;
- }
-
- .concave-corners__corner--tl {
- /* Position */
- left: 0;
- top: 0;
-
- /* Border radius */
- border-radius: 0 0 var(--concave-corners-size) 0;
- }
-
- .concave-corners__corner--tr {
- /* Position */
- right: 0;
- top: 0;
-
- /* Border radius */
- border-radius: 0 0 0 var(--concave-corners-size);
- }
-
- .concave-corners__corner--bl {
- /* Position */
- bottom: 0;
- left: 0;
-
- /* Border radius */
- border-radius: 0 var(--concave-corners-size) 0 0;
- }
-
- .concave-corners__corner--br {
- /* Position */
- bottom: 0;
- right: 0;
-
- /* Border radius */
- border-radius: var(--concave-corners-size) 0 0 0;
- }
- `}
- >
-
-
-
-
-
-
- );
-};
-
-export default Details;
diff --git a/patterns/concave-corners/Cover.tsx b/patterns/concave-corners/Cover.tsx
deleted file mode 100644
index 643fce0..0000000
--- a/patterns/concave-corners/Cover.tsx
+++ /dev/null
@@ -1,72 +0,0 @@
-import * as React from 'react';
-
-import Frame from '../../placeholders/Frame';
-
-const Cover: React.FC<{}> = () => {
- return (
-
-
-
- );
-};
-
-export default Cover;
diff --git a/styles/index.scss b/styles/index.scss
index ac2818a..dd0a04f 100644
--- a/styles/index.scss
+++ b/styles/index.scss
@@ -20,6 +20,7 @@
@import './patterns/centering';
@import './patterns/close-button';
@import './patterns/color-swatch';
+@import './patterns/concave-corners';
// Placeholders
@import './placeholders/circle';
diff --git a/styles/patterns/_concave-corners.scss b/styles/patterns/_concave-corners.scss
new file mode 100644
index 0000000..d289d7d
--- /dev/null
+++ b/styles/patterns/_concave-corners.scss
@@ -0,0 +1,56 @@
+.concave-corners {
+ background-color: rgba(0, 0, 0, .3);
+
+ /* Used to position the corners */
+ position: relative;
+
+ /* Misc */
+ height: 100%;
+ width: 100%;
+}
+.concave-corners__corner {
+ /* Absolute position */
+ position: absolute;
+
+ /* Size */
+ height: 1rem;
+ width: 1rem;
+
+ background: #fff;
+}
+
+.concave-corners__corner--tl {
+ /* Position */
+ left: 0;
+ top: 0;
+
+ /* Border radius */
+ border-radius: 0 0 1rem 0;
+}
+
+.concave-corners__corner--tr {
+ /* Position */
+ right: 0;
+ top: 0;
+
+ /* Border radius */
+ border-radius: 0 0 0 1rem;
+}
+
+.concave-corners__corner--bl {
+ /* Position */
+ bottom: 0;
+ left: 0;
+
+ /* Border radius */
+ border-radius: 0 1rem 0 0;
+}
+
+.concave-corners__corner--br {
+ /* Position */
+ bottom: 0;
+ right: 0;
+
+ /* Border radius */
+ border-radius: 1rem 0 0 0;
+}
\ No newline at end of file