All of humanity's problems stem from man's inability to sit quietly in a room alone, wrote Blaise Pascal.
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radial-gradient()

The radial-gradient() CSS function creates an image consisting of a progressive transition between two or more colors that radiate from an origin. Its shape may be a circle or an ellipse. The function's result is an object of the <gradient> data type, which is a special kind of <image>.
radial-gradient() css reference