Now let's write a client for our DApp and build it using truffle's default builder. First of all, create files and directories based on the preceding configuration we set: create an app directory and inside it, create an index.html file and two directories called javascripts and styelsheets. Inside the javascripts directory, create a file called index.js and in the stylesheets directory, download and place the CSS file of Bootstrap 4. You can find it at https://v4-alpha.getbootstrap.com/getting-started/download/#bootstrap-css-and-js.
In the index.html file, place this code:
<!doctype html> <html> <head> <link rel="stylesheet" type="text/css" href="bootstrap.min.css"> </head> <body> <div class="container"> <div class="row"> ...
