1  export const headerElements = () =>
 2    Array.from(document.querySelectorAll('.category-header'))
 3  
 4  export const getYPosition = element => {
 5    let el = element
 6    let yPosition = 0
 7  
 8    while (el) {
 9      yPosition += el.offsetTop - el.scrollTop + el.clientTop
10      el = el.offsetParent
11    }
12  
13    return yPosition
14  }