Pull the repo using npx degit jkrooncoding/svelte-ts-tailwind, change into the new directory and install the required packages by running either yarn or npm install. After installation, run yarn dev or npm run dev to spin up the app. If the packages are installed correctly you can head to localhost:5000 and see your app running. Happy coding!
To change the app's background color, head into ./src/App.svelte and either delete or change the bg-slate-900 class on the main HTML element.