Emoji not showig in calender

[l0cidlife]

I'm using the this code #calendar-container [data-emoji-tag]::after { content: attr(data-emoji-tag); position: absolute; top: -4px; right: 4px; height: 8px; width: 8px; }

It's supposed to show an emoji next to the day in calender but it's not working I have .css file in my snippets folder, and frontmatter with a space before the :

I'm nt sure why it it's working.