alternate background color

Author: alexandru-pocovnicu

Sprint-3/alarmclock/readme.md

@@ -6,7 +6,7 @@ First off, once you've branched off `main`, then update the title element in `in
 You will need to write your implementation in `alarmclock.js`.
 
 ## How the clock should work
-
+ 
 When you click the `Set Alarm` button the counter at the top of the screen should change to the number you entered in the `input` field. For example, if the `input` field says `10` then the title should say `Time Remaining: 00:10`.
 
 Every one second the title should count down by one.

Sprint-3/alarmclock/style.css

@@ -15,5 +15,14 @@ h1 {
 }
 
 .finish-countdown {
-background-color: darkblue;
+animation: police 0.5s infinite;
+}
+
+@keyframes police {
+  from{
+    background-color:blue;
+  }
+  to{
+    background-color: red;
+  }
 }