diff --git a/src/index.css b/src/index.css
index 48849ad4..684c5441 100644
--- a/src/index.css
+++ b/src/index.css
@@ -51,7 +51,7 @@ pre {
 
 button, .button {
     color: black;
-    background-color: rgba(255,255,255,.5);
+    background-color: rgba(235,235,235,.5);
     border-radius: 5px;
     text-align: center;
     border: 1px solid black;
@@ -59,6 +59,10 @@ button, .button {
     margin: 0 .5em;
 }
 
+button:hover, .button:hover {
+    background-color: rgba(255,255,255,.7);
+}
+
 button:disabled, .button:disabled {
     background-color: rgba(128,128,128,.5);
 }