Simple `browser-sync` setup

package.json

{
  "name": "example",
  "version": "0.1.0",
  "main": "index.js",
  "license": "UNLICENSED",
  "dependencies": {
    "browser-sync": "2.23.6"
  },
  "scripts": {
    "start": "browser-sync start --server --files '**/*.css, **/*.html, **/*.js' --directory --port 7777",
    "clean": "rm -r node_modules && yarn cache clean && yarn"
  }
}

First, install Node.js & Yarn.

Create a folder for your project, and paste the contents above into a new file called package.json. Then, open up a Terminal, change to your project folder directory, and run yarn start to start a live-reloading server that watches all .html, .css, & .js files and refreshes automatically when you save files.