step 1 updates

step1-01/css-demo/css-demo-final.css

@@ -27,6 +27,12 @@ span {
   color: #004578;
 }
 
+/* Sibling selector */
+a ~ a {
+  /* Changing elements from inline to block */
+  display: block;
+}
+
 /* Targeting a class name  */
 .tiles {
   display: flex;
@@ -54,7 +60,7 @@ span {
 }
 
 /* Qualified selector */
-div.links {
+div.important-links {
   background: #004578;
 }
 
@@ -68,12 +74,6 @@ a:hover {
   color: #ccc;
 }
 
-/* Sibling selector */
-a ~ a {
-  /* Changing elements from inline to block */
-  display: block;
-}
-
 /* Positional pseudo-selector  */
 .tiles > div:last-child {
   /* overrides margin-right but leaves other margins alone */