Difference in background-color using mark-tag

I don’t know if I’m doing anything wrong, but I have a difference when using the mark-tag.
This is what it looks like in vs code:

grafik

and this is how it renders in Supernotes:

grafik

even thow the codes are the same:

<mark style="background-color: #FA807280">This is the example in vs code</mark>
<mark style="background-color: #FA807280">This is the example in Supernotes</mark>