Update, 5/29/25: The Nintendo Switch 2 will launch soon on June 5. Pre-order advice currently remains the same, which is to say that you probably won't be able to pre-order the console before ...

disallow things, e.g. specific units enforce naming patterns, e.g. for custom properties set limits, e.g. the number of ID selectors specify notations, e.g. for modern color functions We recommend ...