/resp/ - Responsive Design

adaptive layout uses pre-defined breakpoints to serve specific stylesheets based on screen width.
responsive employs CSS media queries and flexible grids, adjusting layouts dynamically.
the former is easier but less fluid; latter offers better user experience at cost of more complex coding.
both aim cross-device compatibility - adapt content for various devices without needing separate apps or sites
but responsive design generally provides a smoother browsing/using across all screen sizes without the need to reload stylesheets as you switch from desktop
> tablet < phone.