diff --git a/tdoc/common/static/tdoc/load.js b/tdoc/common/static/tdoc/load.js
index 82e364c..edba5f4 100644
--- a/tdoc/common/static/tdoc/load.js
+++ b/tdoc/common/static/tdoc/load.js
@@ -11,13 +11,14 @@ domLoaded.then(() => {
     }
 });
 
-// Handle admonition expansion.
+// Handle admonition expansion. The button is needed to enable keyboard focus.
 domLoaded.then(() => {
     for (const el of document.querySelectorAll('.admonition.dropdown')) {
         const title = el.querySelector('.admonition-title')
         title.addEventListener('click', () => {
             el.classList.toggle('expand');
         });
+        // Enable keyboard navigation.
         const btn = title.appendChild(element('<button></button>'));
         btn.addEventListener('click', (e) => {
             el.classList.toggle('expand');
diff --git a/tdoc/common/static/tdoc/styles.css.jinja b/tdoc/common/static/tdoc/styles.css.jinja
index 035e2d6..21f8523 100644
--- a/tdoc/common/static/tdoc/styles.css.jinja
+++ b/tdoc/common/static/tdoc/styles.css.jinja
@@ -43,7 +43,7 @@ blockquote div > p:has(+ p.attribution) {
 }
 .admonition.dropdown .admonition-title button {
     position: absolute;
-    right: 0.6rem;
+    right: 0;
     outline: none;
     border: none;
     padding: 0;
@@ -59,12 +59,14 @@ blockquote div > p:has(+ p.attribution) {
     margin-bottom: 0;
 }
 .admonition.dropdown:not(.expand) .admonition-title ~ * {
+    display: block;
     margin: 0;
     border: none;
+    padding: 0;
     height: 0;
     visibility: hidden;
-    opacity: 0;
     overflow: hidden;
+    opacity: 0;
 }
 
 /* Iframes */