css: Use SCSS nesting for `.header-main .logo` in portico.scss.
css: Use SCSS nesting for `.header-main .logo` in portico.scss.

punchagan/zulip,synicalsyntax/zulip,shubhamdhama/zulip,showell/zulip,shubhamdhama/zulip,hackerkid/zulip,kou/zulip,kou/zulip,punchagan/zulip,andersk/zulip,hackerkid/zulip,timabbott/zulip,rht/zulip,kou/zulip,hackerkid/zulip,brainwane/zulip,brainwane/zulip,zulip/zulip,brainwane/zulip,showell/zulip,shubhamdhama/zulip,hackerkid/zulip,zulip/zulip,timabbott/zulip,punchagan/zulip,andersk/zulip,kou/zulip,timabbott/zulip,andersk/zulip,synicalsyntax/zulip,eeshangarg/zulip,synicalsyntax/zulip,zulip/zulip,shubhamdhama/zulip,synicalsyntax/zulip,punchagan/zulip,punchagan/zulip,andersk/zulip,rht/zulip,timabbott/zulip,showell/zulip,timabbott/zulip,synicalsyntax/zulip,brainwane/zulip,showell/zulip,synicalsyntax/zulip,hackerkid/zulip,hackerkid/zulip,andersk/zulip,brainwane/zulip,eeshangarg/zulip,eeshangarg/zulip,eeshangarg/zulip,shubhamdhama/zulip,andersk/zulip,kou/zulip,rht/zulip,showell/zulip,hackerkid/zulip,shubhamdhama/zulip,showell/zulip,eeshangarg/zulip,timabbott/zulip,zulip/zulip,zulip/zulip,rht/zulip,eeshangarg/zulip,rht/zulip,eeshangarg/zulip,timabbott/zulip,zulip/zulip,showell/zulip,kou/zulip,andersk/zulip,brainwane/zulip,zulip/zulip,synicalsyntax/zulip,rht/zulip,rht/zulip,shubhamdhama/zulip,kou/zulip,punchagan/zulip,punchagan/zulip,brainwane/zulip