keys: invert background letter colour in dark style

Improve legibility similar to light style.

diff --git a/dark.css b/dark.css
index e47db560bb823bf8c6dc6071ba63ebc136d9fcc3..6cb893f2c88cc68f115950a23054b47953a2bd36 100644 (file)
--- a/dark.css
+++ b/dark.css
@@ -108,3 +108,13 @@ th, td {
 .legend .ex:hover {background: #666}
 .X:hover small {color: #FFF}
 
+/* keyboard */
+
+@media (max-width: 79em) {
+       .keys td b,
+       .keys .meta td b,
+       .keys .ctrl td b,
+       .keys .lead td b {
+               color: #000;
+       }
+}