Hide on mobile view

Hallo!
Pretty cool Plugin 😉
But i need help regarding mobile view.
I’d like to hide the widget only on mobile view. On desktop view it should stay. Is there a way to add a costum css…something like this:

@media (min-width:600px){
	.widget-container.closed{
		display: none!important;
	}}

… 600px is my breakpoint for mobile…
thx