2020-03-28 Gatsby WordPress でサイト作りたい https://www.netlify.com/blog/2020/03/23/migrate-your-wordpress-site-to-the-jamstack/?utm_source=twitter&utm_medium=wp-jamstack-jl&utm_campaign=devex
2020-03-26 querySelector().classlist.contains() https://developer.mozilla.org/en-US/docs/Web/API/Node/contains