Fix: demo on Firefox

Author: forabi

README.md

@@ -23,13 +23,13 @@ import { TimeGridScheduler, classes } from '@remotelock/react-week-scheduler';
 import '@remotelock/react-week-scheduler/index.css';
 
 const rangeStrings = [
-  ['2019-03-03T22:45:00.000Z', '2019-03-04T01:15:00.000Z'],
-  ['2019-03-04T22:15:00.000Z', '2019-03-05T01:00:00.000Z'],
-  ['2019-03-05T22:00:00.000Z', '2019-03-06T01:00:00.000Z'],
-  ['2019-03-06T22:00:00.000Z', '2019-03-07T01:00:00.000Z'],
-  ['2019-03-07T05:30:00.000Z', '2019-03-07T10:00:00.000Z'],
-  ['2019-03-08T22:00:00.000Z', '2019-03-09T01:00:00.000Z'],
-  ['2019-03-09T22:00:00.000Z', '2019-03-10T01:00:00.000Z'],
+  ['2019-03-04 00:15', '2019-03-04 01:45'],
+  ['2019-03-05 09:00', '2019-03-05 10:30'],
+  ['2019-03-06 22:00', '2019-03-06 22:30'],
+  ['2019-03-07 01:30', '2019-03-07 03:00'],
+  ['2019-03-07 05:30', '2019-03-07 10:00'],
+  ['2019-03-08 12:30', '2019-03-08 01:30'],
+  ['2019-03-09 22:00', '2019-03-09 23:59'],
 ];
 
 const defaultSchedule = rangeStrings.map(range =>

demo/index.tsx

@@ -48,13 +48,13 @@ const classes = mapValues(
 );
 
 const rangeStrings: [string, string][] = [
-  ['2019-03-03T22:45:00.000Z', '2019-03-04T01:15:00.000Z'],
-  ['2019-03-04T22:15:00.000Z', '2019-03-05T01:00:00.000Z'],
-  ['2019-03-05T22:00:00.000Z', '2019-03-06T01:00:00.000Z'],
-  ['2019-03-06T22:00:00.000Z', '2019-03-07T01:00:00.000Z'],
-  ['2019-03-07T05:30:00.000Z', '2019-03-07T10:00:00.000Z'],
-  ['2019-03-08T22:00:00.000Z', '2019-03-09T01:00:00.000Z'],
-  ['2019-03-09T22:00:00.000Z', '2019-03-10T01:00:00.000Z'],
+  ['2019-03-04 00:15', '2019-03-04 01:45'],
+  ['2019-03-05 09:00', '2019-03-05 10:30'],
+  ['2019-03-06 22:00', '2019-03-06 22:30'],
+  ['2019-03-07 01:30', '2019-03-07 03:00'],
+  ['2019-03-07 05:30', '2019-03-07 10:00'],
+  ['2019-03-08 12:30', '2019-03-08 01:30'],
+  ['2019-03-09 22:00', '2019-03-09 23:59'],
 ];
 
 const defaultSchedule: ScheduleType = rangeStrings.map(