Element size and scrolling
javascript - How to get the distance from the top for an element? - Stack Overflow
Complete Guide for Ultrasonic Sensor HC-SR04 with Arduino | Random Nerd Tutorials
Inspect CSS grid layouts - Chrome Developers
How to understand CSS Position Absolute once and for all
Get an Element's Position Using JavaScript | kirupa.com
position> - CSS: Cascading Style Sheets | MDN
Absolute Positioning Inside Relative Positioning | CSS-Tricks - CSS-Tricks
How To Do Math in JavaScript with Operators | DigitalOcean
Coordinates
Toroidal topology of population activity in grid cells | Nature
Absolute Positioning Inside Relative Positioning | CSS-Tricks - CSS-Tricks
Coordinates
How to Use Distance Formula to Find the Length of a Line: 7 Steps
javascript - jquery get width of div to left side window - Stack Overflow
Box model
aspect-ratio | CSS-Tricks - CSS-Tricks
Check If an Element is Visible in the Viewport in JavaScript
javascript - Find the distance between HTML element and browser (or window) sides - Stack Overflow
gap | CSS-Tricks - CSS-Tricks
CSS & Images: How to Add, Centre & Resize - Code Institute Global
javascript - HTML/CSS float left automatically fill white space - Stack Overflow
