Placeholders
In the example below, we take a typical card component and recreate it with placeholders applied to create a “loading card”. Size and proportions are the same between the two.
                                            Card title
Some quick example text to build on the card title and make up the bulk of the card's content.
Go somewhereWidth
You can change the width through grid column classes,
                                    width utilities, or inline styles.
Color
By default, the placeholder uses
                                    currentColor. This can be overriden with a custom color or utility
                                    class.
How it works
Create placeholders with the .placeholder class and a
                                    grid column class (e.g., .col-6) to set the width. They
                                    can replace the text inside an element or as be added as a modifier class to an
                                    existing component.
Sizing
The size of .placeholders are based on the
                                    typographic style of the parent element. Customize them with sizing modifiers:
                                    .placeholder-lg, .placeholder-sm, or
                                    .placeholder-xs.
Animation
Animate placehodlers with .placeholder-glow or
                                    .placeholder-wave to better convey the perception of something being
                                    actively loaded.