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Reloadable Stylesheet

To add a stylesheet to an app, simply call state.add_stylesheet("path_to_stylesheet.css"), where path_to_stylesheet.css is replaced by the path and name of the .css file you wish to include. Adding stylesheets in this way allows for hot reloading in which changes can be made to the stylsheets while the application is running and can be refreshed by pressing the F5 key.

Embedded Stylesheet

An alternative way to include a stylesheet is by using the include_str! macro. For example:

static THEME: &'static str = include_str!("path_to_stylesheet.css");

// Inside the app
state.insert_theme(THEME);

This includes the contents of the stylesheet in the application binary itself and so cannot be hot reloaded. This is useful if you do not want the user of your apps to be able to modify the stylesheet properties.