half a day selection issue

hi.. I need to show half a day selection in my project - half a day morning/evening. 
On passing a date, its highlighting the date partially below. How to highlight the date partially above. Any help on this?
TIA.

![Screenshot (101)](https://user-images.githubusercontent.com/112309212/187062194-4678c911-d526-4c24-8fc9-d8b67b7c6334.png)
?