Issue #286: UPDATE About screen - Slides and screen dimensions

public/images/slide-1.png

public/images/slide-2.png

public/images/slide-3.png

public/images/slide-4.png

src/app/ajuda/page.js

src/app/components/About.js

src/app/components/Header.js

src/app/components/MenuProfile.js

src/app/components/Overlay.js

src/app/components/Title.js

src/app/perfil/[id]/components/UserCard.js

src/app/sobre/page.js