As I dive into learning Bootstrap, Javascript, React, and more to create responsive web pages, I find myself struggling with positioning elements in my projects. With properties like align, vertical centering, absolute and relative positions, flex, and align-content item, it can get overwhelming when trying to place an element exactly where I want it. Are there any recommended exercises or resources that focus specifically on mastering the art of positioning elements on a webpage? What keywords should I use to search for these resources online? For instance, while practicing examples from the official Bootstrap page, I notice they often utilize different properties for positioning elements, leading to confusion on my end.