Dive Deeper into Selected Topics

• Positioning theory: https://developer.mozilla.org/en-US/docs/Learn/CSS/CSS_layout/Positioning
• More about the "position" property: https://developer.mozilla.org/en-US/docs/Web/CSS/position
• The z-index: https://developer.mozilla.org/en-US/docs/Web/CSS/z-index
• The Stacking Context: https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_Positioning/Understanding_z_index/The_stacking_context
• The "sticky" value and current browser support: https://caniuse.com/#search=sticky