Spinners
Spinner indicators express an unspecified wait time or display the length of a process.
Material Web Component
The circular progress web component from the Material Web Components library is one option for spinner elements within this theme.
Default
                                            By default, the circule progress Material Web Component uses the
                                            progress="{number}"
                                            attribute to set the positioning of progress state where
                                            number
                                            is any number between 0 and 1.
                                        
Indeterminate
                                            The
                                            indeterminate
                                            attribute can be added to the circular progress web component in place of the progress attribute to add the animated spin to the element.
                                        
Four Color
                                            A separate web component, the four color variation, can be used as well. This is best used with the
                                            indeterminate
                                            attribute.
                                        
Bootstrap Spinner
The Bootstrap spinner component is also available, and has been modifed to match the Material Design specifications as closely as possible.
Default Spinner
By default, the spinner has a dark color, but the color can be set using any text utility that sets color.
Growing Spinner
                                            The
                                            .spinner-grow
                                            variant is another option for a different spinner style.
                                        
Related Links
Docs for Material's circular progress web component
Docs for Material's four color circular progress web component
Bootstrap's spinners documentation