How to hide header?

[TakhirMamirov]

I can't directly apply css to hide header. What I need is to set height to 0px here:

#topBlock{
height:64px;
padding:0px 6px 0px 24px;
position:relative;
@apply(--paper-datatable-top-toolbar);
}
How can I do it from my template where datatable resides?

[dhrytsenko]

@TakhirMamirov Did you try to use custom mixin --paper-datatable-top-toolbar? You can easily use mixin:

#datatableCard {
--paper-datatable-top-toolbar: {
    height: 0px;
}
}