Responsive design gives a website a dynamic layout. This will ensure that mobile devices will get a decent browsing experience as the elements of the page get resized and re-positioned accordingly. Normally, there's no need to zoom-in or out in a responsive website.
Those with academic knowledge in graphic design are familiar with the Color Theory. Basically, in the visual arts, color theory is a body of practical guidance to color mixing and the visual effects of a specific color combination. There are also definitions (or categories) of colors based on the color wheel: primary color, secondary color and tertiary color. Our designs are simply pleasing to eyes, thanks to this design concept.