Jellyfish includes a simple CSS class .progress for the native <progress> HTML element.
Displays when no value is set - it is used to show that progress is occuring but the value is not yet determined.
Use the usual modifiers .primary, .secondary, .success, .warning or .error to change the progress bar color.
In order to create additional progress bar themes, simply add a new color to the $colors SCSS map and the framework will do the rest.