css: Use SCSS nesting for `.tour .carousel-inner .zulip-slack-comparison`.
css: Use SCSS nesting for `.tour .carousel-inner .zulip-slack-comparison`.

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