const isiPhone = !!((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i)))
const isiPad = !!(navigator.userAgent.match(/iPad/i))
const isAndroid = !!(navigator.userAgent.match(/Android/i))
const isMobile = isiPhone || isiPad || isAndroid
const isDesktop = !isMobile

const htmlClassList = document.body.parentNode.classList
htmlClassList.add(isDesktop ? 'desktop' : 'mobile')

var site = (function(){
  var site = {}
  site.init = function(){
    site.build()
  }
  site.build = function(){
    const paras = document.querySelectorAll("section p")
    if (paras.length) {
      paras[0].classList.add('first_paragraph')
    }
  }
  site.init()
})()