The mocka placeholder is a very simple content placeholder that you can use for your website or web application, while loading your page's content. It weighs very little (about 500 bytes minified and gzipped), is fully customizable and you can easily include it in your project's CSS file, by using the Sass mixin provided. Alternatively, you can copy its code and inline it in your HTML for even faster loading. Download the npm package, add the mixin to your project, then @import the file and @include the mixin, passing a single map as an argument. The map contains all the information needed to generate the classes from the mixin. You can find the map with the default values in the mocka.scss file.