errors: Move error page CSS above @media queries.
errors: Move error page CSS above @media queries.

Normal CSS shouldn't be below @media queries, so this moves the
chunk of ".error_page" related CSS above the @media queries in
"portico.css".

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