What is Opacity?
In web design, opacity refers to an object’s transparency. Higher degrees of opacity mean the image is “solid”. The lower the degree of opacity, the more transparent the image is.
More About Opacity
Opacity is relevant to web design when you have multiple overlapping elements. Most modern web design software uses a layers system. That means you can overlap components and decide which layer each element occupies.
With opacity, you can modify the transparency for a specific layer or element so that the layer below it becomes visible. This setting can be helpful if you want visitors to be able to view the website background through menus or fixed elements. Opacity can also help you create a sense of visual depth, simulate texture, and highlight specific shapes in a design.