This is a iiif front-end implementation. You cand build it or see it live here: https://iiif-mockup.netlify.com/.
# install dependencies
$ yarn install
# serve with hot reload at localhost:3000
$ yarn run dev
# build for production and launch server
$ yarn run build
$ yarn start
# generate static project
$ yarn run generate
This is a nuxt aplication so, for detailed explanation on how things work, checkout Nuxt.js docs.