Allow elements to stick within viewport when scrolling. Toggles position: fixed only after scrolling the viewport. Degrades nicely on mobile and tablet browsers.
Supports:
Doesn’t overflow footer because footer pushes elements up.
Doesn’t need any hardcoded CSS tricks.
All major browsers through position:fixed and iOS/Android/IE7 degrade through margin offset.
Fixes tablet and mobile zoom issue with fixed
Offset position from top and bottom within scrolled viewport.
Super light weight: 2.6kb uncompressed.
Div layout structure can be floats or position: absolute support.
