diff --git a/src/components/ViewerPanel.tsx b/src/components/ViewerPanel.tsx
index 730b6b4..423bf27 100644
--- a/src/components/ViewerPanel.tsx
+++ b/src/components/ViewerPanel.tsx
@@ -14,11 +14,12 @@ export default function ViewerPanel({className, style}: {className?: string, sty
 
   return (
     <div className={className}
-          style={{display: 'flex', flexDirection: 'column', 
+          style={{
+              display: 'flex',
+              flexDirection: 'column', 
               flex: 1, 
               position: 'relative',
               width: '100%',
-              height: '100%',
               ...(style ?? {})
           }}>
       {state.output?.stlFileURL &&
diff --git a/src/utils.ts b/src/utils.ts
index 557ea04..97ff6bb 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -91,8 +91,7 @@ export function formatMillis(n: number) {
 // https://medium.com/quick-code/100vh-problem-with-ios-safari-92ab23c852a8
 export function registerCustomAppHeightCSSProperty() {
   const updateAppHeight = () => {
-    const doc = document.documentElement
-    doc.style.setProperty('--app-height', `${window.innerHeight}px`)
+    document.documentElement.style.setProperty('--app-height', `${window.innerHeight}px`)
   }
   window.addEventListener('resize', updateAppHeight)
   updateAppHeight();