Snow in specific container only

Great plugin! Looking for a way to limit snowflakes to a specific container. Would you consider adding a feature for “target container” and “z-index” for the snowflakes? This way we could place snowflakes e.g. on background only or in a smaller container with say a slideshow. Haven’t been able to achieve this by editing the CSS file only – unless you have some pointers on how to make this happen? Thanks!!

https://wordpress.org/plugins/snow-storm/