Fix index mis-alignment (#86)
Fix index mis-alignment (#86)

* Add auth concept doc

* Fix header

* Fix header

* Address comments, update figures

* merge with upstream master

* Sync ahead

* Address comment

* Address comment

* Address comment

* Address comments

* Address comments

* Address comments

* Fix index format issue

* revert

* Test

istio/istio.io,andraxylia/andraxylia.github.io,istio/istio.io,andraxylia/andraxylia.github.io,geeknoid/istio.github.io,geeknoid/istio.github.io,geeknoid/istio.github.io,mandarjog/mandarjog.github.io,geeknoid/istio.github.io,jasminejaksic/istio.github.io,linsun/istio.github.io,andraxylia/andraxylia.github.io,ZackButcher/istio.github.io,linsun/istio.github.io,ZackButcher/istio.github.io,smawson/istio.github.io,istio/istio.io,mandarjog/mandarjog.github.io,istio/istio.io,geeknoid/istio.github.io,istio/istio.io,smawson/istio.github.io,jasminejaksic/istio.github.io,mandarjog/mandarjog.github.io,ZackButcher/istio.github.io,andraxylia/andraxylia.github.io,linsun/istio.github.io,jasminejaksic/istio.github.io,linsun/istio.github.io,linsun/istio.github.io,ZackButcher/istio.github.io,smawson/istio.github.io,istio/istio.io,jasminejaksic/istio.github.io,smawson/istio.github.io,mandarjog/mandarjog.github.io,istio/istio.io