Removing duplicated "position" property at pdf.css
Removing duplicated "position" property at pdf.css

Found that by running css-lint on the code
kenkunz/js-crash-course,Bakhah/presentation-reveal,nguyenkha/web1-2017,michaelstingl/occon17-desktop-client,alexelash/elaconf2017,nicolasmccurdy/testing-talk,robyvandamme/reveal.js,snekse/test-often-and-prosper-slides,davidjb/2016-devnq-open-source-talk,nguyenkha/web1-2017,spockz/chaos-testing-akka-ignite,glours/vavr-presentation,dozer55/panic-fcf,unasuke/reveal.js,lachnerd/presentation-template,marcusdb/funwithfunctional,VisualComputing/Transformations,derrickoswald/CIMSparkPresentation,komita1981/reveal.js,nodeloophole/nodeloophole.github.io,briehman/git-presentation,rbtcollins/reveal.js,davidjb/2016-devnq-open-source-talk,l0wely/reveal.js,meredith-digops/present.amazingday,Jovennan/curso-rails,TDRTalks/emerging-technologies,DiUS/reveal.js,danpersa/coder-dojo,pahund/devugees-prez-oct2017,nmallott/presDevoxx,maximesinclair/presentations,danpersa/coder-dojo,lvh/reveal.js,benabraham/reveal.js,sarahsga/ionic-ngpk,CMeza99/presentation--ci-cd-101,seutje/saxomochrome,ochaloup/reveal.js,psachin/py-starwars,lachnerd/presentation-template,fafnirical/beginner-javascript-training,fafnirical/beginner-javascript-training,lucafraser/reveal.js,raelyard/WhatIveLearned,gapple/myplanet-revealjs,briehman/git-presentation,herickson3/12Factor,arm22/reveal.js,capriott/reveal.js,arm22/MBT,jschwarty/ngcruise-2017-slides,forkata/http2,matt-tingen/this-presentation,agisga/reveal.js,milenaarmada/GDGPresentation,chriwu/ps-tec-2017,burnpanck/reveal.js,brockers/reveal.js,seefood/DIYHolidays,truist/reveal.js,siddhartha-gadgil/presentations,fghaas/reveal.js,humane-teams/humane-teams,fortranguy/Defense,wheatpenny/D8-component-theming,derrickoswald/CIMSparkPresentation,sparkoo/java9-presentation,raelyard/WhatIveLearned,paranojik/everybody-cheer-here-comes-media,cecyc/cli-for-beginners,sshaar08/revealSMS,wheatpenny/D8-component-theming,CMeza99/presentation--ci-cd-101,amiuhle/iot-db-slides,joeskeen/ng-steam-presentation,artedigitalpage/artedigitalpage.github.io,lnicks/p,agross/git-reveal,mikemiles86/reveal.js,LemuelCushing/january-uprising-seminar,pushp/python101,sshaar08/revealSMS,MTechLLC/migrate-with-mainainers,snekse/test-often-and-prosper-slides,morvans/headless-drupal-2017,rbtcollins/reveal.js,michaelstingl/occon17-desktop-client,jonathanhaslett/slides,unasuke/reveal.js,stssoftware/functional-programming-in-js-presentation,anghelvalentin/prezentare,Scot3004/pymock,benmvp/slides,mcanlas/typeclasses,twitched/blockchain_presentation,seefood/DIYHolidays,kbiger/devfest_asynchapi,seutje/saxomochrome,toddjordan/ember-run-loop-best-practices,rbtcollins/reveal.js,toddjordan/ember-run-loop-best-practices,S73417H/bookitin-presentation,Scot3004/pymock,psachin/py-starwars,wulfsolter/presentation-ng2Early,pushp/python101,arm22/MBT,rbtcollins/reveal.js,10xEngineer/reveal.js,joshq00/ironyard-tdd,lecovi/reveal.js,jkinkead/reveal.js,chpill/ssr-cljs,tehfedaykin/10CommandmentsofCommunityOrganizing,czechitas/tvorim-web-1,brockers/reveal.js,capriott/reveal.js,snowyu/reveal.js,iOiurson/JS_ECV_5D,stssoftware/functional-programming-in-js-presentation,hlcs/advanced-networking,siddhartha-gadgil/presentations,pkubowicz/java9-link-presentation,brettsnaidero/svg-animation-slides,akitaonrails/revealjs-feevale-2017,moda-schneij/thick_client_slide_deck,CMeza99/presentation--ci-cd-101,jayramj/agile-retro,pprzetacznik/IElixir-presentation,pascalgrimaud/reveal.js,stevedesmond-ca/presentations,agross/git-reveal,herickson3/12Factor,marc0der/sdkman-talk,Jovennan/curso-rails,joeskeen/ng-steam-presentation,bunopus/presentation-dart-alive-v2,mrjoshida/maker_workshop,aweiker/what-is-graphql,sfleischmann/Kommunikationsworkshop,bunopus/presentation-dart-alive-v2,nmallott/presDevoxx,mrjoshida/maker_workshop,chriwu/ps-tec-2017,komita1981/reveal.js,pushp/python101,Gottox/presentations,DonRichards/reveal.js,mcanlas/typeclasses,socketwench/avoidDeepHurting,xavierdeneux/cours-webanalytics,chpill/ssr-cljs,pahund/prez-beuth2017,soulcharmer/pubquiz_template,jonathanhaslett/slides,denehyg/reveal.js,socketwench/avoidDeepHurting,cwaldbieser/reveal.js,adamecjackson/aj-reveal-dev,dherges/talks-and-slides,esatterwhite/skyring-lightningtalk-01-17,arm22/reveal.js,milenaarmada/GDGPresentation,chris-hamper/getting-your-content-json-api,matt-tingen/this-presentation,truist/reveal.js,catherine-jones/reveal.js,meonkeys/seagl2017-rpi-talk,pahund/devugees-prez-oct2017,joshq00/ironyard-tdd,rbtcollins/reveal.js,pahund/prez-beuth2017,snowyu/reveal.js,BainbridgeArtisanResourceNetwork/class-notes-revealed,claudiopro/reveal.js,ochaloup/reveal.js,dherges/talks-and-slides,soulcharmer/pubquiz_template,Jean85/reveal.js,CMeza99/presentation--ci-cd-101,SGevorg/slides,sfleischmann/Kommunikationsworkshop,claudiopro/reveal.js,jlevallois/Kreveal.js,jschwarty/ngcruise-2017-slides,lvh/reveal.js,orient-man/reveal.js,shimataro/slides,fghaas/reveal.js,Castone22/2017-something-watir,meredith-digops/present.amazingday,fbecart/Presentations,fbecart/Presentations,shimataro/slides,morvans/headless-drupal-2017,pkubowicz/java9-link-presentation,GoZOo/prez-drupal-commerce-2-dclannion,bitjson/bitauth-slides,petejohanson/nerdsummit-2017-intro-to-elm,christofmarti/reveal.js,rbraeunlich/SUG_Dus_Akka_Presentation,stefan-langenmaier/reveal.js,uggla/reveal.js,humane-teams/humane-teams,jayramj/agile-retro,xavierdeneux/cours-webanalytics,benabraham/reveal.js,lachnerd/presentation-template,S73417H/bookitin-presentation,crccheck/tech-debt-talk,TDRTalks/emerging-technologies,girldevelopitcincinnati/reveal.js,MTechLLC/migrate-with-mainainers,robyvandamme/reveal.js,jlevallois/Kreveal.js,pascalgrimaud/reveal.js,fortranguy/Defense,amiuhle/iot-db-slides,nguyenkha/web1-2017,chncdcksn/01-git,rbraeunlich/SUG_Dus_Akka_Presentation,abev66/reveal.js,GoZOo/prez-drupal-commerce-2-dclannion,spockz/chaos-testing-akka-ignite,tehfedaykin/10CommandmentsofCommunityOrganizing,brettsnaidero/svg-animation-slides,nicolasmccurdy/testing-talk,dbs/reveal.js,marcusdb/funwithfunctional,moda-schneij/thick_client_slide_deck,lnicks/p,Jean85/reveal.js,sakisk/decisioningdemo,esatterwhite/skyring-lightningtalk-01-17,jmcuestasb/Transformations,DonRichards/reveal.js,chris-hamper/getting-your-content-json-api,jmcuestasb/Transformations,lecovi/reveal.js,crccheck/tech-debt-talk,simonis/reveal.js,christofmarti/reveal.js,RootPi314/reveal.js,LemuelCushing/january-uprising-seminar,adamecjackson/aj-reveal-dev,VisualComputing/Transformations,raerpo/typescript-talk,AKotro/tok-mock-presentation,unnamedcrewman/reveal.js,burnpanck/reveal.js,artedigitalpage/artedigitalpage.github.io,Bakhah/presentation-reveal,gapple/myplanet-revealjs,toddjordan/emberconf-engines-as-app-platform,czechitas/tvorim-web-1,aweiker/what-is-graphql,BainbridgeArtisanResourceNetwork/class-notes-revealed,sparkoo/java9-presentation,dozer55/panic-fcf,AKotro/tok-mock-presentation,meonkeys/seagl2017-rpi-talk,girldevelopitcincinnati/reveal.js,nuxman/fip-devops,nuxman/fip-devops,chncdcksn/01-git,SGevorg/slides,Errorific/typescript-talk,orient-man/reveal.js,twitched/blockchain_presentation,nodeloophole/nodeloophole.github.io,toddjordan/emberconf-engines-as-app-platform,kbiger/devfest_asynchapi,pprzetacznik/IElixir-presentation,twitched/blockchain_presentation,hakimel/reveal.js,siddhartha-gadgil/presentations,lucafraser/reveal.js,abev66/reveal.js,uggla/reveal.js,jkinkead/reveal.js,unnamedcrewman/reveal.js,autarch/reveal.js,lecovi/reveal.js,hakimel/reveal.js,akitaonrails/revealjs-feevale-2017,rbtcollins/reveal.js,laras126/talks,hellohy/reveal.js,etodd/reveal.js,mislavcimpersak/lightning-talk-awesome-dev-fun,hlcs/advanced-networking,agisga/reveal.js,raerpo/typescript-talk,iOiurson/JS_ECV_5D,marc0der/sdkman-talk,kenkunz/js-crash-course,chriwu/ps-tec-2017,stefan-langenmaier/reveal.js,catherine-jones/reveal.js,l0wely/reveal.js,autarch/reveal.js,benmvp/slides,petejohanson/nerdsummit-2017-intro-to-elm,RootPi314/reveal.js,rajgoel/reveal.js,Scot3004/pymock,truist/reveal.js,rajgoel/reveal.js,laras126/talks,bitjson/bitauth-slides,gerard-pmh/revealjs-conserto,10xEngineer/reveal.js,DiUS/reveal.js,maximesinclair/presentations,sakisk/decisioningdemo,gerard-pmh/revealjs-conserto,anghelvalentin/prezentare,Castone22/2017-something-watir,NtonoDigital/presentacionNtono,glours/vavr-presentation,Errorific/typescript-talk,cecyc/cli-for-beginners,etodd/reveal.js,dbs/reveal.js,alexelash/elaconf2017,hellohy/reveal.js,cwaldbieser/reveal.js,forkata/http2,paranojik/everybody-cheer-here-comes-media,mikemiles86/reveal.js,denehyg/reveal.js,simonis/reveal.js,NtonoDigital/presentacionNtono,wulfsolter/presentation-ng2Early,mislavcimpersak/lightning-talk-awesome-dev-fun,stevedesmond-ca/presentations,sarahsga/ionic-ngpk