diff --git a/.github/workflows/deploy.yml b/.github/workflows/deploy.yml
index 72f849b..c27943a 100644
--- a/.github/workflows/deploy.yml
+++ b/.github/workflows/deploy.yml
@@ -33,7 +33,9 @@ jobs:
         working-directory: site
         run: python ../publish/quartz-patches/apply.py spa
       - name: Apply publish overlay
-        run: cp publish/quartz.config.yaml site/quartz.config.yaml
+        run: |
+          cp publish/quartz.config.yaml site/quartz.config.yaml
+          cp publish/quartz.custom.scss site/quartz/styles/custom.scss
       - uses: actions/setup-node@v6
         with:
           node-version: 24
diff --git a/publish/quartz.custom.scss b/publish/quartz.custom.scss
new file mode 100644
index 0000000..43b3279
--- /dev/null
+++ b/publish/quartz.custom.scss
@@ -0,0 +1,10 @@
+@use "./variables.scss" as *;
+
+.page > #quartz-body {
+  @media all and ($desktop) {
+    grid-template-columns: 420px auto 280px;
+  }
+  @media all and ($tablet) {
+    grid-template-columns: 420px auto;
+  }
+}
diff --git a/publish/setup.ps1 b/publish/setup.ps1
index 1e1e527..78d185d 100644
--- a/publish/setup.ps1
+++ b/publish/setup.ps1
@@ -7,6 +7,7 @@ if (-not (Test-Path -LiteralPath (Join-Path $site ".git"))) {
 }
 
 Copy-Item -LiteralPath $config -Destination (Join-Path $site "quartz.config.yaml") -Force
+Copy-Item -LiteralPath (Join-Path $PSScriptRoot "quartz.custom.scss") -Destination (Join-Path $site "quartz\styles\custom.scss") -Force
 Set-Location -LiteralPath $site
 npm ci
 npx quartz plugin install --from-config