Minimalist Container Queries

By Scott Jehl

This c-q custom element enables very simple "min-width" container queries, allowing you to adjust its CSS based on its own rendered width instead of viewport width.

Example:

resize me!!

Usage

To use, set a given c-q 's --breakpoints; custom CSS property to one or more pixel-based breakpoints that the JS should be aware of, like this:

c-q { --breakpoints: "400 600 800"; }

One or more of these values will appear in the element's data-min-width attribute when they are greater or equal to the element's rendered width. You can style the element based on their presence using the ~= attribute selector, like this:

c-q[data-min-width~="400"] { background: green; }.