A pixel (px) is the basic unit of measurement in a digital image or display, representing a single point of color or light. Pixels form the basis of the image on the screens of devices such as smartphones, computers and televisions. They are square in shape and are arranged in a grid where combinations of pixels of different colours create images, text or other visuals on the screen. The more pixels an image has, the higher its resolution and sharpness.
In solidpixels, you can adjust the properties of elements using pixels to make the design look great on different devices.