This documentation provides a comprehensive analysis of CSS sticky positioning, a hybrid layout scheme that anchors elements within their nearest scroll container while maintaining their space in the document flow. It explains how inset properties define the boundaries for when an element "sticks," emphasizing that this behavior is constrained by the element's containing block. A significant portion of the text addresses common implementation failures, specifically how overflow settings like "hidden" can inadvertently disrupt the sticky reference and why "overflow: clip" is often a preferred alternative. Furthermore, the sources detail the painting and stacking logic defined in CSS specifications, noting that sticky elements automatically create their own stacking contexts to ensure they remain visible above scrolling content. Overall, these excerpts serve as a technical guide for mastering scroll-based layouts while avoiding typical pitfalls related to container dimensions and ancestor properties.