Improve designs

web/components/ActivityStream/ActivityStream.js

web/components/Cards/Card.js

web/components/CurrentOwner.js

web/components/Documents/HumanMadeObject.js

web/components/HasType.js

web/components/Header.js

web/components/Homepage.js

web/components/Layout/Footer.js

web/components/Layout/Header.js

web/components/Layout/HeaderNavBarContainer.js

web/components/Layout/Meta.js

web/components/Layout/index.js

web/components/Link/ActiveLink.js

web/components/Link/index.js

web/components/Sections/Hero.js

web/components/Sections/MiradorGallery.js

web/components/Sections/PageHeader.js

web/components/Sections/SectionText.js

web/components/Sections/SingleObject.js

web/components/Sections/SvgTitle.js