Hi @WAGNERCOSTA,
I'll move this over to the developers group area where there are more CSS/JS experts, but I don't think this is going to be something easily done with css/js via a theme. Just again to be super clear, there is not really any way to enable this to be effective for student viewing at all.
You could use grade posting policies to give students a 0 for "missing" (after the due date) work, or have teachers set all of the grades to 0, which would give this sort of view to students permanently, but I honestly think that could cause more confusion all around about what grade a student was currently getting, depending on the class setup.
-Chris