Reduce <h3> heading margin.
Reduce <h3> heading margin.

This reduces the margin-top of the <h3> headings.

rht/zulip,andersk/zulip,vaidap/zulip,Galexrt/zulip,hackerkid/zulip,punchagan/zulip,punchagan/zulip,rishig/zulip,synicalsyntax/zulip,brainwane/zulip,jackrzhang/zulip,synicalsyntax/zulip,synicalsyntax/zulip,Galexrt/zulip,mahim97/zulip,hackerkid/zulip,rht/zulip,synicalsyntax/zulip,verma-varsha/zulip,dhcrzf/zulip,brainwane/zulip,brainwane/zulip,eeshangarg/zulip,amanharitsh123/zulip,Galexrt/zulip,amanharitsh123/zulip,timabbott/zulip,tommyip/zulip,andersk/zulip,hackerkid/zulip,dhcrzf/zulip,shubhamdhama/zulip,kou/zulip,brainwane/zulip,shubhamdhama/zulip,dhcrzf/zulip,tommyip/zulip,eeshangarg/zulip,timabbott/zulip,rishig/zulip,showell/zulip,brockwhittaker/zulip,brainwane/zulip,zulip/zulip,kou/zulip,andersk/zulip,eeshangarg/zulip,punchagan/zulip,tommyip/zulip,tommyip/zulip,amanharitsh123/zulip,timabbott/zulip,mahim97/zulip,mahim97/zulip,andersk/zulip,eeshangarg/zulip,dhcrzf/zulip,verma-varsha/zulip,eeshangarg/zulip,punchagan/zulip,amanharitsh123/zulip,shubhamdhama/zulip,vaidap/zulip,jackrzhang/zulip,shubhamdhama/zulip,showell/zulip,timabbott/zulip,brockwhittaker/zulip,kou/zulip,dhcrzf/zulip,timabbott/zulip,amanharitsh123/zulip,showell/zulip,Galexrt/zulip,mahim97/zulip,zulip/zulip,shubhamdhama/zulip,zulip/zulip,rishig/zulip,rishig/zulip,timabbott/zulip,brockwhittaker/zulip,mahim97/zulip,synicalsyntax/zulip,andersk/zulip,punchagan/zulip,mahim97/zulip,rishig/zulip,zulip/zulip,tommyip/zulip,andersk/zulip,jackrzhang/zulip,zulip/zulip,jackrzhang/zulip,brockwhittaker/zulip,punchagan/zulip,kou/zulip,synicalsyntax/zulip,punchagan/zulip,synicalsyntax/zulip,Galexrt/zulip,hackerkid/zulip,jackrzhang/zulip,vaidap/zulip,rishig/zulip,showell/zulip,amanharitsh123/zulip,hackerkid/zulip,vaidap/zulip,showell/zulip,vaidap/zulip,jackrzhang/zulip,verma-varsha/zulip,rishig/zulip,shubhamdhama/zulip,rht/zulip,rht/zulip,rht/zulip,rht/zulip,showell/zulip,kou/zulip,hackerkid/zulip,tommyip/zulip,brockwhittaker/zulip,dhcrzf/zulip,verma-varsha/zulip,brockwhittaker/zulip,rht/zulip,shubhamdhama/zulip,eeshangarg/zulip,brainwane/zulip,timabbott/zulip,andersk/zulip,zulip/zulip,verma-varsha/zulip,Galexrt/zulip,eeshangarg/zulip,kou/zulip,vaidap/zulip,hackerkid/zulip,tommyip/zulip,zulip/zulip,kou/zulip,brainwane/zulip,Galexrt/zulip,verma-varsha/zulip,dhcrzf/zulip,showell/zulip,jackrzhang/zulip