css: Use SCSS nesting for `.portico-landing.features-app`.
css: Use SCSS nesting for `.portico-landing.features-app`.

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