diff --git a/src/http.h b/src/http.h
index 7e1efa6..4a90821 100644
--- a/src/http.h
+++ b/src/http.h
@@ -134,9 +134,10 @@ const char *http_default_document =
         "        body{background-color:#F0F0F0;margin:0.5em;}\n"
         "        main{max-width:600px;margin:2em auto;background-color:#FFFFFF;border: 1px solid var(--color);border-radius:4px;padding:1em 2em;}\n"
         "        h1,h2,h3,h4,h5,h6,h7{text-align:center;color:var(--color);font-weight:normal;}\n"
-        "        h1{margin:0.5em 0;font-size:1.5em;}\n"
+        "        h1{font-size:3em;margin:0.125em 0 0.125em 0;}\n"
+        "        h2{font-size:1.5em;margin:0.25em 0 1em 0;}"
         "        p{text-align:center;font-size:0.875em;}\n"
-        "        div.footer{color:#808080;font-size:0.75em;text-align:center;margin:0.5em 0;}\n"
+        "        div.footer{color:#808080;font-size:0.75em;text-align:center;margin:2em 0 0.5em 0;}\n"
         "        div.footer a{color:#808080;}\n"
         "    </style>\n"
         "</head>\n"
@@ -149,7 +150,8 @@ const char *http_default_document =
         "</html>\n";
 
 const char *http_error_document =
-        "        <h1>%1$i %2$s :&#xFEFF;(</h1>\n"
+        "        <h1>%1$i</h1>\n"
+        "        <h2>%2$s :&#xFEFF;(</h2>\n"
         "        <p>%3$s</p>\n"
         "        <p>%4$s</p>\n";