If you are curious how to achieve background blur (glass look), here is the way by Apple: backdrop-filter: saturate(180%) blur(20px); background-color: rgba(255, 255, 255, 0.7); : r/web_design
Backdrop-filters! - DEV Community
GitHub - shenfe/img-blur-in: 🖼Make images load lazily with a blur-in effect.
html - How to blur() consistently cross browsers? - Stack Overflow