This references the way the layout of the content of the page changes at specific breakpoints. For example, in our mobile sizes, usually our content lines up under each other for a one column layout. As the page gets wider, the content may shift to a two-column layout and so forth.
Quote:
We as creators have a decision to make. Do we want to be 90% of noise, or do we want to be the 10% of signal? — Brad Frost