Lista rzeczy do zrobienia and other 85,000 icons from Icons8 icon pack follow the visual guidelines of the operating systems: Windows, iOS, Android KitKat, and Material. PNG format is free up to 100x100 px. Icons are availble for download in PNG and vector (SVG, PDF, EPS, and more).
There are three equal length horizontal lines which are placed on top of each other with equal spacing between them and there are three tick marks which are of equal size towards the left side of each line. Also there is small spacing between each tick mark and the horizontal line.