website: make subtle links from names in credits

The original links drew too much attention to names with hyperlinks.
The new style is obvious on hover, otherwise a subtle dark blue.

Author: Steve Hollasch

style/website.css

@@ -1,6 +1,7 @@
 body {
     margin: 3em 8%;
     font-family: Helvetica, Arial, sans-serif;
+    color: black;
 }
 
 a {
@@ -71,3 +72,16 @@ div.credits ul {
     list-style-type: none;
     column-count: 3;
 }
+
+div.credits a {
+    color: #00a;
+}
+
+div.credits a:visited {
+    color: #00a;
+}
+
+div.credits a:hover {
+    color: white;
+    background: black;
+}