Fix odd responsive issue between 720px - 768px.
Fix odd responsive issue between 720px - 768px.

Not sure what this margin was doing here but it appears to look better
not existing.

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