Update 'px' values to 'rem' in the atoms folder

src/components/atoms/FileCard/index.tsx

src/components/atoms/FileCard/style.module.scss

src/components/atoms/FolderCard/index.tsx

src/components/atoms/FolderCard/style.module.scss

src/components/atoms/ModuleCard/index.tsx

src/components/atoms/ModuleCard/style.module.scss

src/components/atoms/MyBreadcrumbs/index.tsx

src/components/atoms/PersonCard/index.tsx

src/components/atoms/PersonCard/style.module.scss

src/components/atoms/SideBarCard/index.tsx

src/components/atoms/SideBarCard/style.module.scss

src/components/atoms/TutorCard/index.tsx

src/components/atoms/TutorCard/style.module.scss