I want to customize the prodigy interface by removing the X button at the bottom. I am using a custom recipe , is there anyway to customize the interface by editing my custom recipe?
Hi! For customisations like this, you shouldn't even need a custom recipe 
The "global_css" setting in your prodigy.json lets you override the stylesheet, so you can also use it to hide elements. For an overview of the pre-defined classes to use, see this section in the docs: https://prodi.gy/docs/custom-interfaces#js-css
To hide the red "reject" button in v1.9+, you only need the following:
"global_css": ".prodigy-button-reject { display: none }"