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How Do I Use stylesheets with SAFE?

If you wish to use your own CSS or SASS stylesheets with SAFE apps, you can embed either them through webpack. The template already includes all required NPM packages you may need, so you will only need to configure webpack to reference your stylesheet and include in the outputs.

Adding the Stylesheet

First, create a CSS file in the src/Client folder of your solution e.g style.css.

The same approach can be taken for .scss files.

Configuring WebPack

I'm using the Standard Template

Inside the webpack.config.js file, add the following variable to the CONFIG object, which points to the style file you created previously.

cssEntry: './src/Client/style.css',

2. Embed CSS into outputs

Find the entry field in the module.exports object at the bottom of the file, and replace it with the following:

entry: isProduction ? {
    app: [resolve(CONFIG.fsharpEntry), resolve(CONFIG.cssEntry)]
} : {
    app: resolve(CONFIG.fsharpEntry),
    style: resolve(CONFIG.cssEntry)
},

This combines the css and F# outputs into a single bundle for production, and separately for dev.

I'm using the Minimal Template

1. Embed CSS into outputs

Find the entry field in the module.exports object at the bottom of the file, and replace it with the following:

entry: {
    app: [
        resolve('./src/Client/Client.fsproj'),
        resolve('./src/Client/style.css')
    ]
},

There you have it!

You can now style your app by writing to the style.css file.