main: people page tuned

...leguide/source/_patterns/molecules/simple_header.mustache

...de/source/_patterns/organisms/newsletter-section.mustache

main/styleguide/source/_patterns/templates/people.mustache

main/styleguide/source/css/atoms/container.pcss

main/styleguide/source/css/atoms/extra_sizing.pcss

main/styleguide/source/css/molecules/switch.pcss

main/styleguide/source/css/style.pcss

main/styleguide/tailwind.config.js