A good visual hierarchy can be used to separate out your important elements from the less important ones. A visual hierarchy results from varying such things as alignment, proximity, colour, tone, indentation, font size, element size, padding, spacing, etc. When these visual language elements are applied correctly, they can work together to direct and pause people’s attention within a page - improving general readability. A visual hierarchy can be said to generate friction and slows us down from skimming through the full page top to bottom - for the better that is. With a good visual hierarchy, although we might spend a bit more time on the page, the end result should be that we register more items and characteristics. Think of it as as road trip. You can take the highway and get to your destination quicker (bottom of page), or you can take the scenic route and remember more interesting things along the way. Give the eye a place to stop.