That is, you first design the filter of 1Hz, and then push it to 100Hz. The way to deduce it is to multiply all the frequency-related components in the network by a coefficient: all L decreases by 100 times, and the inductance wL remains unchanged; All C is also reduced by 100 times, and the capacitive reactance is 1/wC unchanged.
If there is still "normalized impedance" (1ω), continue recursion. For example, if it is used in a 50 Ω system, it is 50 times larger than the normalized impedance, and all L needs to be expanded 50 times, and the inductance needs to be expanded 50 times. All capacitors are reduced by 50 times, and the capacitive reactance is 50 times larger.