code: function pxToEmOrRem(breakpoints, ratio = 16, unit) {
    const newBreakpoints = {};
  
    for (let key in breakpoints) {
      const point = breakpoints[key];
  
      if (String(point).includes('px')) {
        newBreakpoints[key] = +(parseInt(point) / ratio) + unit;
        continue;
      }
  
      newBreakpoints[key] = point;
    }
  
    return newBreakpoints;
  }
docs: Converts breakpoint units in px to rem or em
  @param {Object} breakpoints - an object containing breakpoint names as keys and the width as value
  @param {number} ratio [16] - size of 1 rem in px. What is your main font-size in px?
  @param {'rem' | 'em'} unit