feat: small mobile responsiveness

src/assets/main/notes_mobile.png

src/assets/main/vscode_mobile.png

src/assets/main/vscode_mobile2.png

src/index.scss

src/js/components/TopLinks/TopLinks.module.scss

src/js/sections/BottomSection/BottomSection.js

src/js/sections/BottomSection/BottomSection.module.scss

src/js/sections/CloudSection/CloudSection.module.scss

src/js/sections/FeatureSection/FeatureSection.module.scss

src/js/sections/LandingSection/LandingSection.module.scss

src/js/sections/StatsSection/StatsSection.js

src/js/sections/StatsSection/StatsSection.module.scss

src/js/sections/TowerSection/TowerSection.module.scss

src/js/sections/VscodeSection/VscodeSection.js

src/js/sections/VscodeSection/VscodeSection.module.scss