Idea of Opacity Icon
The image is a square that is made up of a lot of little squares. Some of the squares are darkened and other are not. Along the outer edge of the bigger square, some of the squares are opened on one side.
This is the Opacity icon for Windows 10
. Here we go. Optimized for 32x32 px, these are the simplest icons in the line style. Downloadable formats are PNG and SVG, among others. Icons8 icon pack is unique in providing a huge number of icons designed by the same team of four designers who create the new icons every working day in the same style and with the same quality. Same cool as the Bat Face, huh.