css: Add block comment for reaction button logic.
css: Add block comment for reaction button logic.

punchagan/zulip,andersk/zulip,punchagan/zulip,rht/zulip,rht/zulip,andersk/zulip,eeshangarg/zulip,rht/zulip,hackerkid/zulip,hackerkid/zulip,rht/zulip,zulip/zulip,kou/zulip,andersk/zulip,zulip/zulip,andersk/zulip,hackerkid/zulip,zulip/zulip,zulip/zulip,kou/zulip,hackerkid/zulip,punchagan/zulip,kou/zulip,eeshangarg/zulip,rht/zulip,hackerkid/zulip,zulip/zulip,kou/zulip,andersk/zulip,andersk/zulip,kou/zulip,eeshangarg/zulip,zulip/zulip,eeshangarg/zulip,eeshangarg/zulip,kou/zulip,zulip/zulip,eeshangarg/zulip,punchagan/zulip,punchagan/zulip,eeshangarg/zulip,rht/zulip,punchagan/zulip,rht/zulip,hackerkid/zulip,kou/zulip,andersk/zulip,punchagan/zulip,hackerkid/zulip