Responsive web design is how fast your page loads when accessed on the internet. Most internet users are impacient and do not want to wait long for your page to load. It is proven that if your page take awhile to load people will leave your page and not visit it. It is importnt to make sure you are using web safe grids and images to help your web page load quickly. It is one of the most important parts of web designing is to ensure that your web page loads fast so users can easily access your page and not have to wait for it to load.