Add right/left pane layout CSS
Add right/left pane layout CSS

[#49754179]

yhj630520/sagan,vizewang/sagan,dsyer/sagan,dlizarra/sagan,dsyer/sagan,dvaughn555/sagan,dkushner/sagan,martinlippert/sagan,gregturn/sagan,dkushner/sagan,mbateman/sagan,dlizarra/sagan,vizewang/sagan,gregturn/sagan,amit-siddhu/sagan,garylgh/sagan,martinlippert/sagan,yhj630520/sagan,dvaughn555/sagan,BHASKARSDEN277GITHUB/sagan,spring-io/sagan,seoilhyun/sagan,eonezhang/sagan,dharmaraju/sagan,andriykonoz/sagan,andriykonoz/sagan,yhj630520/sagan,eonezhang/sagan,eonezhang/sagan,lowtalker/sagan,dvaughn555/sagan,dkushner/sagan,mbateman/sagan,dharmaraju/sagan,rwinch/sagan,rwinch/sagan,amit-siddhu/sagan,dkushner/sagan,spring-io/sagan,seoilhyun/sagan,vizewang/sagan,mbateman/sagan,amit-siddhu/sagan,dvaughn555/sagan,lowtalker/sagan,BHASKARSDEN277GITHUB/sagan,eonezhang/sagan,mbateman/sagan,dlizarra/sagan,TabberGit/sagan,martinlippert/sagan,TabberGit/sagan,spring-io/sagan,BHASKARSDEN277GITHUB/sagan,garylgh/sagan,BHASKARSDEN277GITHUB/sagan,dlizarra/sagan,lowtalker/sagan,rwinch/sagan,gregturn/sagan,andriykonoz/sagan,yhj630520/sagan,TabberGit/sagan,dsyer/sagan,TabberGit/sagan,seoilhyun/sagan,dharmaraju/sagan,amit-siddhu/sagan,andriykonoz/sagan,lowtalker/sagan,rwinch/sagan,garylgh/sagan,spring-io/sagan,garylgh/sagan,seoilhyun/sagan,vizewang/sagan,dsyer/sagan,dharmaraju/sagan,martinlippert/sagan