diff --git a/docs/assets/docs.css b/docs/assets/docs.css
index 0b812e40e..abd7fdff6 100644
--- a/docs/assets/docs.css
+++ b/docs/assets/docs.css
@@ -96,6 +96,7 @@ ul, ol {
     > ul li,
     > ol li {
       color: #666;
+      font-size: 14px;
       line-height: 20px;
       margin: 10px 0 10px 20px;
       padding-left: 20px;
diff --git a/docs/index.js b/docs/index.js
index 587ad7d83..c4e8a454f 100644
--- a/docs/index.js
+++ b/docs/index.js
@@ -47,11 +47,10 @@ router.beforeEach((route, redirect, next) => {
 });
 
 router.afterEach((route) => {
-  if (route.page !== '/') {
-    const sideNavHeight = document.querySelector('.side-nav').clientHeight;
+  if (route.path !== '/') {
+    const sideNavBox = document.querySelector('.side-nav');
     const pageContentBox = document.querySelector('.page-content');
-    const pageContentHeight = pageContentBox.clientHeight;
-    pageContentBox.style.height = Math.max(sideNavHeight, pageContentHeight) + 'px';
+    pageContentBox.style.height = Math.max(sideNavBox && sideNavBox.clientHeight, pageContentBox && pageContentBox.clientHeight) + 'px';
   }
 });