Fix amp-story incorrect measurements in prerender (#12989)
Fix amp-story incorrect measurements in prerender (#12989)

* add standalone css in amp-story's constructor

* use mutateElement in buildCallback() instead

erwinmombay/amphtml,zhouyx/amphtml,bpaduch/amphtml,luciancrasovan/amphtml,prateekbh/amphtml,danielrozenberg/amphtml,adup-tech/amphtml,alanorozco/amphtml,widespace-os/amphtml,smartadserver/amphtml,yieldbot/amphtml,honeybadgerdontcare/amphtml,ampproject/amphtml,jmadler/amphtml,Gregable/amphtml,rsimha-amp/amphtml,danielrozenberg/amphtml,jpettitt/amphtml,tlong2/amphtml,sebastianbenz/amphtml,sriramkrish85/amphtml,voyagegroup/amphtml,aghassemi/amphtml,honeybadgerdontcare/amphtml,Gregable/amphtml,sebastianbenz/amphtml,donttrustthisbot/amphtml,aghassemi/amphtml,ampproject/amphtml,donttrustthisbot/amphtml,yieldmo/amphtml,powdercloud/amphtml,clawr/amphtml,yandex-pcode/amphtml,kamtschatka/amphtml,media-net/amphtml,danielrozenberg/amphtml,chaveznvg/amphtml,jridgewell/amphtml,mhc-gh/amphtml,adup-tech/amphtml,jpettitt/amphtml,luciancrasovan/amphtml,yieldbot/amphtml,Gregable/amphtml,smartadserver/amphtml,smartadserver/amphtml,danielrozenberg/amphtml,camelburrito/amphtml,nexxtv/amphtml,jpettitt/amphtml,zhouyx/amphtml,lannka/amphtml,dotandads/amphtml,engtat/amphtml,powdercloud/amphtml,jpettitt/amphtml,techhtml/amphtml,nexxtv/amphtml,powdercloud/amphtml,techhtml/amphtml,rsimha-amp/amphtml,pedjoni8/amphtml,donttrustthisbot/amphtml,erwinmombay/amphtml,techhtml/amphtml,taboola/amphtml,jpettitt/amphtml,aghassemi/amphtml,tlong2/amphtml,alanorozco/amphtml,powdercloud/amphtml,cory-work/amphtml,powdercloud/amphtml,powdercloud/amphtml,mhc-gh/amphtml,BenDz/amphtml,voyagegroup/amphtml,jmadler/amphtml,engtat/amphtml,Gregable/amphtml,lannka/amphtml,laterpay/amphtml,pedjoni8/amphtml,BenDz/amphtml,donttrustthisbot/amphtml,jridgewell/amphtml,sriramkrish85/amphtml,camelburrito/amphtml,camelburrito/amphtml,erwinmombay/amphtml,yandex-pcode/amphtml,ampproject/amphtml,jridgewell/amphtml,zhangsu/amphtml,adup-tech/amphtml,BenDz/amphtml,techhtml/amphtml,voyagegroup/amphtml,zhangsu/amphtml,ampproject/amphtml,erwinmombay/amphtml,jridgewell/amphtml,widespace-os/amphtml,yieldmo/amphtml,yieldmo/amphtml,donttrustthisbot/amphtml,sebastianbenz/amphtml,mhc-gh/amphtml,sharethrough/amphtml,luciancrasovan/amphtml,clawr/amphtml,honeybadgerdontcare/amphtml,koshka/amphtml,src-code/amphtml,rsimha-amp/amphtml,media-net/amphtml,prateekbh/amphtml,clawr/amphtml,danielrozenberg/amphtml,zhouyx/amphtml,ampproject/amphtml,camelburrito/amphtml,cvializ/amphtml,cory-work/amphtml,camelburrito/amphtml,voyagegroup/amphtml,luciancrasovan/amphtml,engtat/amphtml,lannka/amphtml,tlong2/amphtml,widespace-os/amphtml,rsimha-amp/amphtml,danielrozenberg/amphtml,yieldmo/amphtml,cvializ/amphtml,sharethrough/amphtml,yieldbot/amphtml,chaveznvg/amphtml,bpaduch/amphtml,tlong2/amphtml,clawr/amphtml,koshka/amphtml,taboola/amphtml,aghassemi/amphtml,pedjoni8/amphtml,tlong2/amphtml,engtat/amphtml,laterpay/amphtml,danielrozenberg/amphtml,cvializ/amphtml,zhouyx/amphtml,sharethrough/amphtml,chaveznvg/amphtml,adup-tech/amphtml,erwinmombay/amphtml,pedjoni8/amphtml,cvializ/amphtml,BenDz/amphtml,techhtml/amphtml,media-net/amphtml,clawr/amphtml,jmadler/amphtml,honeybadgerdontcare/amphtml,yandex-pcode/amphtml,alanorozco/amphtml,mhc-gh/amphtml,dotandads/amphtml,widespace-os/amphtml,cvializ/amphtml,jridgewell/amphtml,yieldbot/amphtml,cory-work/amphtml,smartadserver/amphtml,bpaduch/amphtml,yandex-pcode/amphtml,honeybadgerdontcare/amphtml,dotandads/amphtml,taboola/amphtml,sebastianbenz/amphtml,lannka/amphtml,zhouyx/amphtml,sebastianbenz/amphtml,donttrustthisbot/amphtml,prateekbh/amphtml,bpaduch/amphtml,jpettitt/amphtml,cory-work/amphtml,widespace-os/amphtml,taboola/amphtml,clawr/amphtml,yandex-pcode/amphtml,jmadler/amphtml,luciancrasovan/amphtml,jridgewell/amphtml,Gregable/amphtml,sharethrough/amphtml,jpettitt/amphtml,prateekbh/amphtml,luciancrasovan/amphtml,zhouyx/amphtml,media-net/amphtml,ampproject/amphtml,jmadler/amphtml,donttrustthisbot/amphtml,Gregable/amphtml,engtat/amphtml,yieldbot/amphtml,src-code/amphtml,alanorozco/amphtml,yandex-pcode/amphtml,voyagegroup/amphtml,sharethrough/amphtml,chaveznvg/amphtml,nexxtv/amphtml,BenDz/amphtml,adup-tech/amphtml,kamtschatka/amphtml,zhangsu/amphtml,mhc-gh/amphtml,bpaduch/amphtml,techhtml/amphtml,bpaduch/amphtml,nexxtv/amphtml,nexxtv/amphtml,tlong2/amphtml,dotandads/amphtml,nexxtv/amphtml,bpaduch/amphtml,danielrozenberg/amphtml,alanorozco/amphtml,pedjoni8/amphtml,cory-work/amphtml,sebastianbenz/amphtml,nexxtv/amphtml,alanorozco/amphtml,koshka/amphtml,laterpay/amphtml,lannka/amphtml,prateekbh/amphtml,chaveznvg/amphtml,src-code/amphtml,jridgewell/amphtml,Gregable/amphtml,media-net/amphtml,koshka/amphtml,voyagegroup/amphtml,taboola/amphtml,rsimha-amp/amphtml,kamtschatka/amphtml,sriramkrish85/amphtml,sriramkrish85/amphtml,alanorozco/amphtml,laterpay/amphtml,yieldbot/amphtml,adup-tech/amphtml,kamtschatka/amphtml,lannka/amphtml,sriramkrish85/amphtml,src-code/amphtml,zhangsu/amphtml,src-code/amphtml,pedjoni8/amphtml,camelburrito/amphtml,taboola/amphtml,clawr/amphtml,BenDz/amphtml,cvializ/amphtml,Gregable/amphtml,cory-work/amphtml,sriramkrish85/amphtml,camelburrito/amphtml,media-net/amphtml,rsimha-amp/amphtml,dotandads/amphtml,chaveznvg/amphtml,erwinmombay/amphtml,laterpay/amphtml,taboola/amphtml,zhangsu/amphtml,yandex-pcode/amphtml,kamtschatka/amphtml,media-net/amphtml,aghassemi/amphtml,engtat/amphtml,alanorozco/amphtml,kamtschatka/amphtml,smartadserver/amphtml,prateekbh/amphtml,engtat/amphtml,koshka/amphtml,yieldmo/amphtml,mhc-gh/amphtml,zhouyx/amphtml,aghassemi/amphtml,media-net/amphtml,voyagegroup/amphtml,jmadler/amphtml,yieldmo/amphtml,cory-work/amphtml,prateekbh/amphtml,yieldmo/amphtml,koshka/amphtml,laterpay/amphtml,jpettitt/amphtml,rsimha-amp/amphtml,sharethrough/amphtml,powdercloud/amphtml,dotandads/amphtml,widespace-os/amphtml,mhc-gh/amphtml,smartadserver/amphtml,ampproject/amphtml,zhangsu/amphtml,lannka/amphtml,honeybadgerdontcare/amphtml,mhc-gh/amphtml,luciancrasovan/amphtml,src-code/amphtml,ampproject/amphtml,honeybadgerdontcare/amphtml