The reflow is a process when the browser calculate the position and geometry of an element when you use some Css styles or Javascript.
The TL;DR is, always use styles that utilize GPU. For example :
Transform
When it comes to provide a great UX useful in mobile
Personal Notes :
https://docs.google.com/document/d/1z...
.
.
.
.
.
.
.
.
.
#frontend #system #design #ui #user #interactions #business