diff --git a/quartz/components/Explorer.tsx b/quartz/components/Explorer.tsx
index ec7c48ef7..156158130 100644
--- a/quartz/components/Explorer.tsx
+++ b/quartz/components/Explorer.tsx
@@ -112,12 +112,12 @@ export default ((userOpts?: Partial<Options>) => {
             <polyline points="6 9 12 15 18 9"></polyline>
           </svg>
         </button>
-        <div id="explorer-content">
+        <nav id="explorer-content">
           <ul class="overflow" id="explorer-ul">
             <ExplorerNode node={fileTree} opts={opts} fileData={fileData} />
             <li id="explorer-end" />
           </ul>
-        </div>
+        </nav>
       </div>
     )
   }
diff --git a/quartz/components/renderPage.tsx b/quartz/components/renderPage.tsx
index 0d7115526..d1354314e 100644
--- a/quartz/components/renderPage.tsx
+++ b/quartz/components/renderPage.tsx
@@ -202,19 +202,19 @@ export function renderPage(
   const Body = BodyConstructor()
 
   const LeftComponent = (
-    <div class="left sidebar">
+    <aside class="left sidebar">
       {left.map((BodyComponent) => (
         <BodyComponent {...componentData} />
       ))}
-    </div>
+    </aside>
   )
 
   const RightComponent = (
-    <div class="right sidebar">
+    <aside class="right sidebar">
       {right.map((BodyComponent) => (
         <BodyComponent {...componentData} />
       ))}
-    </div>
+    </aside>
   )
 
   const lang = componentData.fileData.frontmatter?.lang ?? cfg.locale?.split("-")[0] ?? "en"
@@ -230,7 +230,7 @@ export function renderPage(
           </Header>
           <Body {...componentData}>
             {LeftComponent}
-            <div class="center">
+            <main class="center">
               <div class="page-header">
                 <div class="popover-hint">
                   {beforeBody.map((BodyComponent) => (
@@ -245,7 +245,7 @@ export function renderPage(
                   <BodyComponent {...componentData} />
                 ))}
               </div>
-            </div>
+            </main>
             {RightComponent}
             <Footer {...componentData} />
           </Body>
