right click -> inspect HTML looks pretty handwritten (lack of crazy css classes and simple structure) <link rel="stylesheet" href="https://fi-le.net/css/tufte

right click -> inspect HTML looks pretty handwritten (lack of crazy css classes and simple structure) <link rel="stylesheet" href="https://fi-le.net/css/tufte.css https://fi-le.net/css/tufte.css"> They are using tufte.css https://edwardtufte.github.io/tufte-css/ https://edwardtufte.github.io/tufte-css/