Update social links for gallery, remove youtube

Update copywrite link

css/style.css

@@ -101,8 +101,7 @@ ul.buttons li {
   text-transform: uppercase;
 }
 
-.button-youtube:hover {
-  color: #ff0000;
+.button:hover {
   text-shadow:
     -3px -3px 5px #fff,
     -3px 3px 5px #fff,
@@ -111,25 +110,13 @@ ul.buttons li {
     0px 0px 7px #ff0000;
 }
 
-.button-instagram:hover {
-  color: #c13584;
-  text-shadow:
-    -3px -3px 5px #fff,
-    -3px 3px 5px #fff,
-    3px -3px 5px #fff,
-    3px 3px 5px #fff,
-    0px 0px 7px #5851db;
-}
+.gallery:hover { color: #5588e0; }
 
-.button-twitter:hover {
-  color: #1da1f2;
-  text-shadow:
-    -3px -3px 5px #fff,
-    -3px 3px 5px #fff,
-    3px -3px 5px #fff,
-    3px 3px 5px #fff,
-    0px 0px 7px #f77737;
-}
+.youtube:hover { color: #ff0000; }
+
+.instagram:hover { color: #c13584; }
+
+.twitter:hover { color: #1da1f2; }
 
 #background-info {
   text-align: right;