add red in css

Author: Henry-Li-R

style.css

@@ -1,8 +1,11 @@
 .blue {
-            background-color:blue
+    background-color:blue
 }
 .circle{
-            border-radius:50%;
-            width:500px;
-            height:500px;
-}
+    border-radius:50%;
+    width:500px;
+    height:500px;
+}
+.red {
+    background-color:red
+ }