Learning Flex
https://yoksel.github.io/flex-cheatsheet/

https://css-tricks.com/snippets/css/a-guide-to-flexbox/

responsive design and adaptive design

Meta viewport
https://www.quirksmode.org/mobile/metaviewport/

A tale of two viewports
https://www.quirksmode.org/mobile/viewports.html

https://www.quirksmode.org/mobile/viewports2.html

Responsive layout grid
Material Design’s responsive layout grid adapts to screen size and orientation, ensuring consistency across layouts.

https://material.io/design/layout/responsive-layout-grid.html#layout-anatomy

5 Techniques to Make Mobile Call to Action Buttons Intuitive
To tap or not to tap — that is the question on the user’s mind when they see a call to action button.

https://uxmovement.medium.com/5-techniques-to-make-mobile-call-to-action-buttons-intuitive-a4d0bb49b212

How I increased this travel app’s booking revenue by redesigning it — a UX case study
Giving the power of flexibility and efficiency back to travelers.

https://uxdesign.cc/how-i-increased-this-travel-apps-booking-revenue-by-redesigning-it-a-ux-case-study-39c37b96ed78