diff --git a/themes/mdbook/css/variables.css b/themes/mdbook/css/variables.css
index 59fcda8..d194b59 100644
--- a/themes/mdbook/css/variables.css
+++ b/themes/mdbook/css/variables.css
@@ -1,265 +1,265 @@
-
 /* Globals */
 
 :root {
-    --sidebar-width: 300px;
-    --page-padding: 15px;
-    --content-max-width: 750px;
-    --menu-bar-height: 50px;
-    --mono-font: "Source Code Pro", Consolas, "Ubuntu Mono", Menlo, "DejaVu Sans Mono", monospace, monospace;
-    --code-font-size: 0.875em /* please adjust the ace font size accordingly in editor.js */
+  --sidebar-width: min(300px, max(23.6vw, 200px));
+  --page-padding: 15px;
+  --content-max-width: 750px;
+  --menu-bar-height: 50px;
+  --mono-font: 'Source Code Pro', Consolas, 'Ubuntu Mono', Menlo, 'DejaVu Sans Mono', monospace,
+    monospace;
+  --code-font-size: 0.875em; /* please adjust the ace font size accordingly in editor.js */
 }
 
 /* Themes */
 
 .ayu {
-    --bg: hsl(210, 25%, 8%);
-    --fg: #c5c5c5;
+  --bg: hsl(210, 25%, 8%);
+  --fg: #c5c5c5;
 
-    --sidebar-bg: #14191f;
-    --sidebar-fg: #c8c9db;
-    --sidebar-non-existant: #5c6773;
-    --sidebar-active: #ffb454;
-    --sidebar-spacer: #2d334f;
+  --sidebar-bg: #14191f;
+  --sidebar-fg: #c8c9db;
+  --sidebar-non-existant: #5c6773;
+  --sidebar-active: #ffb454;
+  --sidebar-spacer: #2d334f;
 
-    --scrollbar: var(--sidebar-fg);
+  --scrollbar: var(--sidebar-fg);
 
-    --icons: #737480;
-    --icons-hover: #b7b9cc;
+  --icons: #737480;
+  --icons-hover: #b7b9cc;
 
-    --links: #0096cf;
+  --links: #0096cf;
 
-    --inline-code-color: #ffb454;
+  --inline-code-color: #ffb454;
 
-    --theme-popup-bg: #14191f;
-    --theme-popup-border: #5c6773;
-    --theme-hover: #191f26;
+  --theme-popup-bg: #14191f;
+  --theme-popup-border: #5c6773;
+  --theme-hover: #191f26;
 
-    --quote-bg: hsl(226, 15%, 17%);
-    --quote-border: hsl(226, 15%, 22%);
+  --quote-bg: hsl(226, 15%, 17%);
+  --quote-border: hsl(226, 15%, 22%);
 
-    --table-border-color: hsl(210, 25%, 13%);
-    --table-header-bg: hsl(210, 25%, 28%);
-    --table-alternate-bg: hsl(210, 25%, 11%);
+  --table-border-color: hsl(210, 25%, 13%);
+  --table-header-bg: hsl(210, 25%, 28%);
+  --table-alternate-bg: hsl(210, 25%, 11%);
 
-    --searchbar-border-color: #848484;
-    --searchbar-bg: #424242;
-    --searchbar-fg: #fff;
-    --searchbar-shadow-color: #d4c89f;
-    --searchresults-header-fg: #666;
-    --searchresults-border-color: #888;
-    --searchresults-li-bg: #252932;
-    --search-mark-bg: #e3b171;
+  --searchbar-border-color: #848484;
+  --searchbar-bg: #424242;
+  --searchbar-fg: #fff;
+  --searchbar-shadow-color: #d4c89f;
+  --searchresults-header-fg: #666;
+  --searchresults-border-color: #888;
+  --searchresults-li-bg: #252932;
+  --search-mark-bg: #e3b171;
 
-    --color-scheme: dark;
+  --color-scheme: dark;
 }
 
 .coal {
-    --bg: hsl(200, 7%, 8%);
-    --fg: #98a3ad;
+  --bg: hsl(200, 7%, 8%);
+  --fg: #98a3ad;
 
-    --sidebar-bg: #292c2f;
-    --sidebar-fg: #a1adb8;
-    --sidebar-non-existant: #505254;
-    --sidebar-active: #3473ad;
-    --sidebar-spacer: #393939;
+  --sidebar-bg: #292c2f;
+  --sidebar-fg: #a1adb8;
+  --sidebar-non-existant: #505254;
+  --sidebar-active: #3473ad;
+  --sidebar-spacer: #393939;
 
-    --scrollbar: var(--sidebar-fg);
+  --scrollbar: var(--sidebar-fg);
 
-    --icons: #43484d;
-    --icons-hover: #b3c0cc;
+  --icons: #43484d;
+  --icons-hover: #b3c0cc;
 
-    --links: #2b79a2;
+  --links: #2b79a2;
 
-    --inline-code-color: #c5c8c6;
+  --inline-code-color: #c5c8c6;
 
-    --theme-popup-bg: #141617;
-    --theme-popup-border: #43484d;
-    --theme-hover: #1f2124;
+  --theme-popup-bg: #141617;
+  --theme-popup-border: #43484d;
+  --theme-hover: #1f2124;
 
-    --quote-bg: hsl(234, 21%, 18%);
-    --quote-border: hsl(234, 21%, 23%);
+  --quote-bg: hsl(234, 21%, 18%);
+  --quote-border: hsl(234, 21%, 23%);
 
-    --table-border-color: hsl(200, 7%, 13%);
-    --table-header-bg: hsl(200, 7%, 28%);
-    --table-alternate-bg: hsl(200, 7%, 11%);
+  --table-border-color: hsl(200, 7%, 13%);
+  --table-header-bg: hsl(200, 7%, 28%);
+  --table-alternate-bg: hsl(200, 7%, 11%);
 
-    --searchbar-border-color: #aaa;
-    --searchbar-bg: #b7b7b7;
-    --searchbar-fg: #000;
-    --searchbar-shadow-color: #aaa;
-    --searchresults-header-fg: #666;
-    --searchresults-border-color: #98a3ad;
-    --searchresults-li-bg: #2b2b2f;
-    --search-mark-bg: #355c7d;
+  --searchbar-border-color: #aaa;
+  --searchbar-bg: #b7b7b7;
+  --searchbar-fg: #000;
+  --searchbar-shadow-color: #aaa;
+  --searchresults-header-fg: #666;
+  --searchresults-border-color: #98a3ad;
+  --searchresults-li-bg: #2b2b2f;
+  --search-mark-bg: #355c7d;
 
-    --color-scheme: dark;
+  --color-scheme: dark;
 }
 
 .light {
-    --bg: hsl(0, 0%, 100%);
-    --fg: hsl(0, 0%, 0%);
+  --bg: hsl(0, 0%, 100%);
+  --fg: hsl(0, 0%, 0%);
 
-    --sidebar-bg: #fafafa;
-    --sidebar-fg: hsl(0, 0%, 0%);
-    --sidebar-non-existant: #aaaaaa;
-    --sidebar-active: #1f1fff;
-    --sidebar-spacer: #f4f4f4;
+  --sidebar-bg: #fafafa;
+  --sidebar-fg: hsl(0, 0%, 0%);
+  --sidebar-non-existant: #aaaaaa;
+  --sidebar-active: #1f1fff;
+  --sidebar-spacer: #f4f4f4;
 
-    --scrollbar: #8F8F8F;
+  --scrollbar: #8f8f8f;
 
-    --icons: #747474;
-    --icons-hover: #000000;
+  --icons: #747474;
+  --icons-hover: #000000;
 
-    --links: #20609f;
+  --links: #20609f;
 
-    --inline-code-color: #301900;
+  --inline-code-color: #301900;
 
-    --theme-popup-bg: #fafafa;
-    --theme-popup-border: #cccccc;
-    --theme-hover: #e6e6e6;
+  --theme-popup-bg: #fafafa;
+  --theme-popup-border: #cccccc;
+  --theme-hover: #e6e6e6;
 
-    --quote-bg: hsl(197, 37%, 96%);
-    --quote-border: hsl(197, 37%, 91%);
+  --quote-bg: hsl(197, 37%, 96%);
+  --quote-border: hsl(197, 37%, 91%);
 
-    --table-border-color: hsl(0, 0%, 95%);
-    --table-header-bg: hsl(0, 0%, 80%);
-    --table-alternate-bg: hsl(0, 0%, 97%);
+  --table-border-color: hsl(0, 0%, 95%);
+  --table-header-bg: hsl(0, 0%, 80%);
+  --table-alternate-bg: hsl(0, 0%, 97%);
 
-    --searchbar-border-color: #aaa;
-    --searchbar-bg: #fafafa;
-    --searchbar-fg: #000;
-    --searchbar-shadow-color: #aaa;
-    --searchresults-header-fg: #666;
-    --searchresults-border-color: #888;
-    --searchresults-li-bg: #e4f2fe;
-    --search-mark-bg: #a2cff5;
+  --searchbar-border-color: #aaa;
+  --searchbar-bg: #fafafa;
+  --searchbar-fg: #000;
+  --searchbar-shadow-color: #aaa;
+  --searchresults-header-fg: #666;
+  --searchresults-border-color: #888;
+  --searchresults-li-bg: #e4f2fe;
+  --search-mark-bg: #a2cff5;
 
-    --color-scheme: light;
+  --color-scheme: light;
 }
 
 .navy {
-    --bg: hsl(226, 23%, 11%);
-    --fg: #bcbdd0;
+  --bg: hsl(226, 23%, 11%);
+  --fg: #bcbdd0;
 
-    --sidebar-bg: #282d3f;
-    --sidebar-fg: #c8c9db;
-    --sidebar-non-existant: #505274;
-    --sidebar-active: #2b79a2;
-    --sidebar-spacer: #2d334f;
+  --sidebar-bg: #282d3f;
+  --sidebar-fg: #c8c9db;
+  --sidebar-non-existant: #505274;
+  --sidebar-active: #2b79a2;
+  --sidebar-spacer: #2d334f;
 
-    --scrollbar: var(--sidebar-fg);
+  --scrollbar: var(--sidebar-fg);
 
-    --icons: #737480;
-    --icons-hover: #b7b9cc;
+  --icons: #737480;
+  --icons-hover: #b7b9cc;
 
-    --links: #2b79a2;
+  --links: #2b79a2;
 
-    --inline-code-color: #c5c8c6;
+  --inline-code-color: #c5c8c6;
 
-    --theme-popup-bg: #161923;
-    --theme-popup-border: #737480;
-    --theme-hover: #282e40;
+  --theme-popup-bg: #161923;
+  --theme-popup-border: #737480;
+  --theme-hover: #282e40;
 
-    --quote-bg: hsl(226, 15%, 17%);
-    --quote-border: hsl(226, 15%, 22%);
+  --quote-bg: hsl(226, 15%, 17%);
+  --quote-border: hsl(226, 15%, 22%);
 
-    --table-border-color: hsl(226, 23%, 16%);
-    --table-header-bg: hsl(226, 23%, 31%);
-    --table-alternate-bg: hsl(226, 23%, 14%);
+  --table-border-color: hsl(226, 23%, 16%);
+  --table-header-bg: hsl(226, 23%, 31%);
+  --table-alternate-bg: hsl(226, 23%, 14%);
 
-    --searchbar-border-color: #aaa;
-    --searchbar-bg: #aeaec6;
-    --searchbar-fg: #000;
-    --searchbar-shadow-color: #aaa;
-    --searchresults-header-fg: #5f5f71;
-    --searchresults-border-color: #5c5c68;
-    --searchresults-li-bg: #242430;
-    --search-mark-bg: #a2cff5;
+  --searchbar-border-color: #aaa;
+  --searchbar-bg: #aeaec6;
+  --searchbar-fg: #000;
+  --searchbar-shadow-color: #aaa;
+  --searchresults-header-fg: #5f5f71;
+  --searchresults-border-color: #5c5c68;
+  --searchresults-li-bg: #242430;
+  --search-mark-bg: #a2cff5;
 
-    --color-scheme: dark;
+  --color-scheme: dark;
 }
 
 .rust {
-    --bg: hsl(60, 9%, 87%);
-    --fg: #262625;
+  --bg: hsl(60, 9%, 87%);
+  --fg: #262625;
 
-    --sidebar-bg: #3b2e2a;
-    --sidebar-fg: #c8c9db;
-    --sidebar-non-existant: #505254;
-    --sidebar-active: #e69f67;
-    --sidebar-spacer: #45373a;
+  --sidebar-bg: #3b2e2a;
+  --sidebar-fg: #c8c9db;
+  --sidebar-non-existant: #505254;
+  --sidebar-active: #e69f67;
+  --sidebar-spacer: #45373a;
 
-    --scrollbar: var(--sidebar-fg);
+  --scrollbar: var(--sidebar-fg);
 
-    --icons: #737480;
-    --icons-hover: #262625;
+  --icons: #737480;
+  --icons-hover: #262625;
 
-    --links: #2b79a2;
+  --links: #2b79a2;
 
-    --inline-code-color: #6e6b5e;
+  --inline-code-color: #6e6b5e;
 
-    --theme-popup-bg: #e1e1db;
-    --theme-popup-border: #b38f6b;
-    --theme-hover: #99908a;
+  --theme-popup-bg: #e1e1db;
+  --theme-popup-border: #b38f6b;
+  --theme-hover: #99908a;
 
-    --quote-bg: hsl(60, 5%, 75%);
-    --quote-border: hsl(60, 5%, 70%);
+  --quote-bg: hsl(60, 5%, 75%);
+  --quote-border: hsl(60, 5%, 70%);
 
-    --table-border-color: hsl(60, 9%, 82%);
-    --table-header-bg: #b3a497;
-    --table-alternate-bg: hsl(60, 9%, 84%);
+  --table-border-color: hsl(60, 9%, 82%);
+  --table-header-bg: #b3a497;
+  --table-alternate-bg: hsl(60, 9%, 84%);
 
-    --searchbar-border-color: #aaa;
-    --searchbar-bg: #fafafa;
-    --searchbar-fg: #000;
-    --searchbar-shadow-color: #aaa;
-    --searchresults-header-fg: #666;
-    --searchresults-border-color: #888;
-    --searchresults-li-bg: #dec2a2;
-    --search-mark-bg: #e69f67;
+  --searchbar-border-color: #aaa;
+  --searchbar-bg: #fafafa;
+  --searchbar-fg: #000;
+  --searchbar-shadow-color: #aaa;
+  --searchresults-header-fg: #666;
+  --searchresults-border-color: #888;
+  --searchresults-li-bg: #dec2a2;
+  --search-mark-bg: #e69f67;
 
-    --color-scheme: light;
+  --color-scheme: light;
 }
 
 @media (prefers-color-scheme: dark) {
-    .light.no-js {
-        --bg: hsl(200, 7%, 8%);
-        --fg: #98a3ad;
+  .light.no-js {
+    --bg: hsl(200, 7%, 8%);
+    --fg: #98a3ad;
 
-        --sidebar-bg: #292c2f;
-        --sidebar-fg: #a1adb8;
-        --sidebar-non-existant: #505254;
-        --sidebar-active: #3473ad;
-        --sidebar-spacer: #393939;
+    --sidebar-bg: #292c2f;
+    --sidebar-fg: #a1adb8;
+    --sidebar-non-existant: #505254;
+    --sidebar-active: #3473ad;
+    --sidebar-spacer: #393939;
 
-        --scrollbar: var(--sidebar-fg);
+    --scrollbar: var(--sidebar-fg);
 
-        --icons: #43484d;
-        --icons-hover: #b3c0cc;
+    --icons: #43484d;
+    --icons-hover: #b3c0cc;
 
-        --links: #2b79a2;
+    --links: #2b79a2;
 
-        --inline-code-color: #c5c8c6;
+    --inline-code-color: #c5c8c6;
 
-        --theme-popup-bg: #141617;
-        --theme-popup-border: #43484d;
-        --theme-hover: #1f2124;
+    --theme-popup-bg: #141617;
+    --theme-popup-border: #43484d;
+    --theme-hover: #1f2124;
 
-        --quote-bg: hsl(234, 21%, 18%);
-        --quote-border: hsl(234, 21%, 23%);
+    --quote-bg: hsl(234, 21%, 18%);
+    --quote-border: hsl(234, 21%, 23%);
 
-        --table-border-color: hsl(200, 7%, 13%);
-        --table-header-bg: hsl(200, 7%, 28%);
-        --table-alternate-bg: hsl(200, 7%, 11%);
+    --table-border-color: hsl(200, 7%, 13%);
+    --table-header-bg: hsl(200, 7%, 28%);
+    --table-alternate-bg: hsl(200, 7%, 11%);
 
-        --searchbar-border-color: #aaa;
-        --searchbar-bg: #b7b7b7;
-        --searchbar-fg: #000;
-        --searchbar-shadow-color: #aaa;
-        --searchresults-header-fg: #666;
-        --searchresults-border-color: #98a3ad;
-        --searchresults-li-bg: #2b2b2f;
-        --search-mark-bg: #355c7d;
-    }
+    --searchbar-border-color: #aaa;
+    --searchbar-bg: #b7b7b7;
+    --searchbar-fg: #000;
+    --searchbar-shadow-color: #aaa;
+    --searchresults-header-fg: #666;
+    --searchresults-border-color: #98a3ad;
+    --searchresults-li-bg: #2b2b2f;
+    --search-mark-bg: #355c7d;
+  }
 }
diff --git a/themes/mdbook/index.hbs b/themes/mdbook/index.hbs
index fddc823..2ec5df5 100644
--- a/themes/mdbook/index.hbs
+++ b/themes/mdbook/index.hbs
@@ -176,8 +176,12 @@
         <script>
             var html = document.querySelector('html');
             var sidebar = null;
-            try { sidebar = localStorage.getItem('typst-book-sidebar'); } catch (e) { }
-            sidebar = sidebar || 'visible';
+            if (document.body.clientWidth >= 800) {
+                try { sidebar = localStorage.getItem('typst-book-sidebar'); } catch (e) { }
+                sidebar = sidebar || 'visible';
+            } else {
+                sidebar = 'hidden';
+            }
             html.classList.remove('sidebar-visible');
             html.classList.add("sidebar-" + sidebar);
         </script>