Доделала скроллы, зафиксировала хедер

src/pages/calendar/components/CalendarHeader.vue

@@ -1,5 +1,5 @@
 <template lang="pug">
-  .calendar-header-wrapper.flex.items-center.justify-between.py-3.pl-5.pr-6
+  .calendar-header-wrapper.flex.items-center.justify-between.py-3.pl-5.pr-6.top-0
     .flex
       base-arrow-button.left-arrow.mr-4(@click="previousHandler")
       base-arrow-button.right-arrow.mr-6(@click="nextHandler")
@@ -51,6 +51,8 @@ export default {
   background-color: var(--default-white)
   height: 56px
   border-radius: 4px
+  position: sticky
+  z-index: 10
 
 .left-arrow
   transform: rotate(90deg)