Source code

padding: 0.0100rem;

After compression

padding: .0100rem;

Ideal compression

padding: .01rem;

Need to modify file

lib/optimizer/level-1/value-optimizers/fraction.js

var FRACTION_PATTERN = /\.([1-9]*)0+(\D|$)/g;

modification

var FRACTION_PATTERN = /\.(\d*[1-9]|[1-9]*)0+(\D|$)/g;