muser-8.x-1.x-dev/themes/muser_base/muser_base.breakpoints.yml

muser_base.small:
  label: small
  mediaQuery: '(min-width: 0px)'
  weight: 0
  multipliers:
    - 1x

muser_base.medium:
  label: medium
  mediaQuery: '(min-width: 601px)'
  weight: 1
  multipliers:
    - 1x

muser_base.large:
  label: large
  mediaQuery: '(min-width: 992px)'
  weight: 2
  multipliers:
    - 1x