Leopard can be used for demonstrations, prototypes and in production. In non-embed mode the chat client is designed to float over an Iframed web page.
It can also be embedded on an external site.
Vue.js and Vuetify are pretty modern frameworks. Leopard will therefore run fine on Microsoft Edge, Firefox, Chrome and Safari. It will not work in IE 11 or below without adding some coding logic to the build process.
If you're interested in learning more about Vue.js then this course on Udemy is excellent