Asynchronous or async loading refers to downloading and applying a page resource in the background, independently of other resources and without otherwise impacting the initial loading process. Terms & Techniques The terms lazy loading, on-demand, deferred, and asynchronous are all related to the various methods for minimizing initial-load page weight and eliminating render blocking resources. ... Eliminate Render-blocking CSS to Increase Google PageSpeed Score

The ::marker pseudo-element is for styling the stylistic marker of a list element. For example, the bullet point of a default <ul> (e.g. •) or the numeral of a default <ol> (e.g. 1.). This makes it extremely easy to do simple things like colorize them. See the Pen Add marker to any HTML element by EduaturE (@eduature) on CodePen.