Pinning will begin when the center of the element aligns with the center of the viewport. Pinning will begin when the center of the element aligns with the center of the viewport.
Pinning will begin when the top of the element aligns with the center of the viewport. Pinning will begin when the top of the element aligns with the center of the viewport.
Pinning will begin when the bottom of the element aligns with the center of the viewport. Pinning will begin when the bottom of the element aligns with the center of the viewport.
Pinning will begin when the bottom of the element aligns with the center of the viewport. Pinning will begin when the bottom of the element aligns with the center of the viewport.