https://jsfiddle.net/senseblow0/k94x23m0/
https://output.jsbin.com/kofuqibepo/
https://anotepad.com/notes/hx9rtq74
Cats are fond of watching TV from windows. This is sometimes referred to as cat TV. It's a form of entertainment that is often instinctual. Glass window inserts with an enclosed cat flap are installed on doors or windows. They can be fitted in double-glazed. Easy to install Cat flaps can be fitted to a variety of glass, including french doors, patios, bifolds and single-glazed windows. They are great for people who don't want to cut into a wall or door and need