Dual toolbar in one page. but, one in view, one in page

Hello everyone. i want to use dual toolbar on application.
One in already view for navigation in application. but in one page i want to use another one.
my app.svelte structure is like this.
this is the structure of the page that i want to add second toolbar.
I only found a way to use bottom:52px on that toolbar. which is not ideal. because page content got affected from this and bottom has like 104px unusable part. for this i had to recalculate page-content with vh and px. this is the only solution that i found. Do you have better ideas? or is this only way?