diff --git a/src/components/Nav.astro b/src/components/Nav.astro
index b494437..2bb1a58 100644
--- a/src/components/Nav.astro
+++ b/src/components/Nav.astro
@@ -30,7 +30,7 @@ const paths = [
 ];
 ---
 
-<ul class="flex my-4 h-12">
+<ul class="flex my-4 h-12 bg-dark">
   <li><a href="#main-content" class="skip-link">Skip to main content</a></li>
   <li
     class="border-none bg-transparent my-2 mr-4 logo grid place-content-center"
diff --git a/src/layouts/Layout.astro b/src/layouts/Layout.astro
index 75c0e98..0f2de40 100644
--- a/src/layouts/Layout.astro
+++ b/src/layouts/Layout.astro
@@ -9,7 +9,9 @@ interface Props {
 }
 const t = useTranslations(Astro.url);
 
-const { title, width = "compact" } = Astro.props;
+const { title } = Astro.props;
+import "./theme.css";
+import "./global.css";
 ---
 
 <!doctype html>
@@ -52,58 +54,9 @@ const { title, width = "compact" } = Astro.props;
         },
       ]}
     />
-    <link rel="stylesheet" href="/app.css" />
     <meta name="generator" content={Astro.generator} />
     <!-- <meta http-equiv="refresh" content="0;url=/" /> -->
     <title>{title}</title>
-    <style is:inline>
-      :root {
-        --neutral-1000: #000000;
-        --neutral-800: #16161e;
-        --neutral-500: #252530;
-        --neutral-400: #2c2c3a;
-        --neutral-300: #414152;
-        --neutral-100: #d5d5d7;
-        --neutral-000: #f1f1f4;
-        --fill: #cb5a5a;
-
-        --border-radius-sm: 10px;
-        --border-radius-md: 20px;
-        --border-radius-lg: 30px;
-
-        --spacing-sm: 10px;
-        --spacing-md: 20px;
-      }
-
-      body {
-        --background-dark: var(--neutral-800);
-        --background: var(--neutral-000);
-        --background-light: var(--neutral-400);
-        --outline: var(--neutral-300);
-        --text: var(--neutral-800);
-        --text-light: black;
-
-        background-color: var(--neutral-100);
-        transition: background-color 0.1s;
-        color: var(--text);
-        font-family: "Nunito Sans", sans-serif;
-        background-color: var(--background-dark);
-      }
-
-      .dark body {
-        --background-dark: var(--neutral-800);
-        --background: var(--neutral-500);
-        --background-light: var(--neutral-400);
-        --background-gradient: linear-gradient(
-          -30deg,
-          var(--neutral-500) 0%,
-          var(--neutral-400) 100%
-        );
-        --outline: var(--neutral-300);
-        --text: var(--neutral-100);
-        --text-light: white;
-      }
-    </style>
     <script is:inline>
       (function () {
         try {
@@ -119,7 +72,7 @@ const { title, width = "compact" } = Astro.props;
     </script>
   </head>
   <body class="bg-dark text-neutral p-2 flex flex-col gap-4">
-    <header>
+    <header class="sticky top-0 z-2 bg-dark">
       <Nav />
     </header>
     <main id="main-content" class="flex flex-col gap-4">
@@ -139,11 +92,32 @@ const { title, width = "compact" } = Astro.props;
         max-width: 600px;
         margin: 0 auto;
       }
+
+      .dark header::after {
+        content: "";
+        position: absolute;
+        width: 15px;
+        height: 15px;
+        color: red;
+        background: url("data:image/svg+xml,%3Csvg viewBox='0 0 249 249' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M248.5 0H0V249C0.268799 111.435 111.423 0 248.5 0Z' fill='%2316161e'/%3E%3C/svg%3E");
+      }
+
+      .dark header::before {
+        content: "";
+        position: absolute;
+        width: 10px;
+        height: 10px;
+        right: 0px;
+        bottom: -10px;
+        transform: rotate(90deg);
+        color: red;
+        background: url("data:image/svg+xml,%3Csvg viewBox='0 0 249 249' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M248.5 0H0V249C0.268799 111.435 111.423 0 248.5 0Z' fill='%2316161e'/%3E%3C/svg%3E");
+      }
     </style>
-    <script is:inline>
+    <script>
       (function () {
         // prettier-ignore
-        function rgbaToDataURL(w, h, rgba) { let row = w * 4 + 1; let idat = 6 + h * (5 + row); let bytes = [ 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, w >> 8, w & 255, 0, 0, h >> 8, h & 255, 8, 6, 0, 0, 0, 0, 0, 0, 0, idat >>> 24, (idat >> 16) & 255, (idat >> 8) & 255, idat & 255, 73, 68, 65, 84, 120, 1, ]; let table = [ 0, 498536548, 997073096, 651767980, 1994146192, 1802195444, 1303535960, 1342533948, -306674912, -267414716, -690576408, -882789492, -1687895376, -2032938284, -1609899400, -1111625188, ]; let a = 1, b = 0; for (let y = 0, i = 0, end = row - 1; y < h; y++, end += row - 1) { bytes.push( y + 1 < h ? 0 : 1, row & 255, row >> 8, ~row & 255, (row >> 8) ^ 255, 0,); for (b = (b + a) % 65521; i < end; i++) { let u = rgba[i] & 255; bytes.push(u); a = (a + u) % 65521; b = (b + a) % 65521; } } bytes.push( b >> 8, b & 255, a >> 8, a & 255, 0, 0, 0, 0, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130,); for (let [start, end] of [ [12, 29], [37, 41 + idat], ]) { let c = ~0; for (let i = start; i < end; i++) { c ^= bytes[i]; c = (c >>> 4) ^ table[c & 15]; c = (c >>> 4) ^ table[c & 15]; } c = ~c; bytes[end++] = c >>> 24; bytes[end++] = (c >> 16) & 255; bytes[end++] = (c >> 8) & 255; bytes[end++] = c & 255; } return "data:image/png;base64," + btoa(String.fromCharCode(...bytes)); }
+        function rgbaToDataURL(w, h, rgba) { let row = w * 4 + 1; let idat = 6 + h * (5 + row); let bytes = [ 137, 80, 78, 71, 13, 10, 26, 10, 0, 0, 0, 13, 73, 72, 68, 82, 0, 0, w >> 8, w & 255, 0, 0, h >> 8, h & 255, 8, 6, 0, 0, 0, 0, 0, 0, 0, idat >>> 24, (idat >> 16) & 255, (idat >> 8) & 255, idat & 255, 73, 68, 65, 84, 120, 1, ]; let table = [ 0, 498536548, 997073096, 651767980, 1994146192, 1802195444, 1303535960, 1342533948, -306674912, -267414716, -690576408, -882789492, -1687895376, -2032938284, -1609899400, -1111625188, ]; let a = 1, b = 0; for (let y = 0, i = 0, end = row - 1; y < h; y++, end += row - 1) { bytes.push( y + 1 < h ? 0 : 1, row & 255, row >> 8, ~row & 255, (row >> 8) ^ 255, 0,); for (b = (b + a) % 65521; i < end; i++) { let u = rgba[i] & 255; bytes.push(u); a = (a + u) % 65521; b = (b + a) % 65521; } } bytes.push( b >> 8, b & 255, a >> 8, a & 255, 0, 0, 0, 0, 0, 0, 0, 0, 73, 69, 78, 68, 174, 66, 96, 130,); for (let [start, end] of [ [12, 29], [37, 41 + idat], ]) { let c = ~0; for (let i = start; i < end; i++) { c ^= bytes[i]; c = (c >>> 4) ^ table[c & 15]; c = (c >>> 4) ^ table[c & 15]; } c = ~c; bytes[end++] = c >>> 24; bytes[end++] = (c >> 16) & 255; bytes[end++] = (c >> 8) & 255; bytes[end++] = c & 255; } return "data:image/png;base64," + window.btoa(String.fromCharCode(...bytes)); }
         // prettier-ignore
         function thumbHashToApproximateAspectRatio(hash) { let header = hash[3]; let hasAlpha = hash[2] & 0x80; let isLandscape = hash[4] & 0x80; let lx = isLandscape ? (hasAlpha ? 5 : 7) : header & 7; let ly = isLandscape ? header & 7 : hasAlpha ? 5 : 7; return lx / ly; }
         // prettier-ignore
diff --git a/public/app.css b/src/layouts/global.css
similarity index 100%
rename from public/app.css
rename to src/layouts/global.css
diff --git a/src/layouts/theme.css b/src/layouts/theme.css
new file mode 100644
index 0000000..b7d17dc
--- /dev/null
+++ b/src/layouts/theme.css
@@ -0,0 +1,44 @@
+:root {
+  --neutral-1000: #000000;
+  --neutral-800: #16161e;
+  --neutral-500: #252530;
+  --neutral-400: #2c2c3a;
+  --neutral-300: #414152;
+  --neutral-100: #d5d5d7;
+  --neutral-000: #f1f1f4;
+  --fill: #cb5a5a;
+
+  --border-radius-sm: 10px;
+  --border-radius-md: 20px;
+  --border-radius-lg: 30px;
+
+  --spacing-sm: 10px;
+  --spacing-md: 20px;
+}
+
+body {
+  --background-dark: var(--neutral-800);
+  --background: var(--neutral-000);
+  --background-light: var(--neutral-400);
+  --outline: var(--neutral-300);
+  --text: var(--neutral-800);
+  --text-light: black;
+
+  background-color: var(--neutral-100);
+  transition: background-color 0.1s;
+  color: var(--text);
+  font-family: "Nunito Sans", sans-serif;
+  background-color: var(--background-dark);
+}
+
+.dark body {
+  --background-dark: var(--neutral-800);
+  --background: var(--neutral-500);
+  --background-light: var(--neutral-400);
+  --background-gradient: linear-gradient(-30deg,
+      var(--neutral-500) 0%,
+      var(--neutral-400) 100%);
+  --outline: var(--neutral-300);
+  --text: var(--neutral-100);
+  --text-light: white;
+}
