css: Use SCSS nesting for `.api-details` in portico.scss.
css: Use SCSS nesting for `.api-details` in portico.scss.

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