diff --git a/proj/YT2P/assets/css/style.css b/proj/YT2P/assets/css/style.css
index 18e4f54..813cc74 100644
--- a/proj/YT2P/assets/css/style.css
+++ b/proj/YT2P/assets/css/style.css
@@ -215,3 +215,9 @@ section.qna h1 {
   font-size: 1.6rem;
   margin-bottom: 40px;
 }
+
+@media only screen and (max-width: 800px) {
+  section.qna {
+    max-width: 70vw;
+  }
+}
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