diff --git a/index.html b/index.html
index f2089b2..2f70b98 100644
--- a/index.html
+++ b/index.html
@@ -19,6 +19,12 @@
             </div>
             <div class="code"></div>
             <div class="preview"></div>
+            <div class="preview">
+                <div class="compile-error" role="alert" hidden></div>
+                <div class="slide">
+                    <div class="stage" tabindex="-1"></div>
+                </div>
+            </div>
         </div>
         <script type="module" src="/src/main.ts"></script>
     </body>
diff --git a/src/style.css b/src/style.css
index fbc461e..cefe00b 100644
--- a/src/style.css
+++ b/src/style.css
@@ -199,3 +199,10 @@ body {
 .delete-slide:focus-visible {
     opacity: 1;
 }
+
+.slide {
+    all: revert;
+    aspect-ratio: 16/9;
+    width: 100%;
+    height: auto;
+}
\ No newline at end of file