repeating-radial-gradient()
The repeating-radial-gradient() CSS function creates an image consisting of repeating gradients that radiate from an origin. It is similar to radial-gradient() and takes the same arguments, but it repeats the color stops infinitely in all directions so as to cover its entire container, similar to repeating-linear-gradient(). The function's result is an object of the <gradient> data type, which is a special kind of <image>.
repeating-radial-gradient() css reference