diff --git a/frontends/ycdl_flask/static/css/common.css b/frontends/ycdl_flask/static/css/common.css
index c1162c6..4912022 100644
--- a/frontends/ycdl_flask/static/css/common.css
+++ b/frontends/ycdl_flask/static/css/common.css
@@ -40,7 +40,7 @@ body
         "content_body" 1fr
         /1fr;
 
-    height: 100%;
+    min-height: 100%;
     margin: 0;
 
     background-color: var(--color_primary);
diff --git a/frontends/ycdl_flask/static/js/common.js b/frontends/ycdl_flask/static/js/common.js
index 051ef95..508b50e 100644
--- a/frontends/ycdl_flask/static/js/common.js
+++ b/frontends/ycdl_flask/static/js/common.js
@@ -76,6 +76,12 @@ function _request(method, url, callback)
         }
         "data": {JSON parsed from server response if json_ok}.
     }
+
+    So, from most lenient to most strict, error catching might look like:
+    if response.meta.completed
+    if response.meta.json_ok
+    if response.meta.status === 200
+    if response.meta.status === 200 and response.meta.json_ok
     */
     const request = new XMLHttpRequest();
     const response = {
@@ -159,6 +165,12 @@ function html_to_element(html)
     return template.content.firstElementChild;
 }
 
+common.size_iframe_to_content =
+function size_iframe_to_content(iframe)
+{
+    iframe.style.height = iframe.contentWindow.document.documentElement.scrollHeight + 'px';
+}
+
 ////////////////////////////////////////////////////////////////////////////////////////////////////
 // HOOKS & ADD-ONS /////////////////////////////////////////////////////////////////////////////////
 ////////////////////////////////////////////////////////////////////////////////////////////////////