Modern interiors are marked by clean, sleek lines for nearly all elements of the design. Whether the home leans ultra-modern or has a modern-contemporary interior design, sticking to straight lines is the best way to convey the style, especially in the little details. When it comes to designing a kitchen, many homeowners are often focused on colors and materials. However, small details like the edge of the countertop can make a big impact. So, if you’re designing a modern kitchen, you’ll want to stick with countertop edges that are straight and sleek, such as the square edge.