Scroll down a little bit to see this in action: an empty space is kept open for the header.Ī sticky box compares two positions: its natural position in the flow and its fixed position according to its inset properties. Also, the space it takes in the normal flow is kept open, even if it is currently in fixed position. It thus participates in the default flow: if it becomes higher it pushes the paragraphs below it downwards, just like any other regular HTML element.
Scroll down until the container disappears to see this in action.Ī sticky box starts in its natural position in the flow, as if it has position: relative. If it cannot obey the rules that follow without escaping from its container, it instead remains at the edge. The relevant styles are:Ī sticky box never escapes its containing box. The sticky box has an inset property to provide instructions. The sticky is in a perfectly normal, its container, and that container is in a that is the scroll box because it has overflow: auto. The sticky box will never be positioned outside this container, which thus serves as a constraint. These properties contain vital instructions, and if the sticky box doesn’t receive them it doesn’t know what to do.Ī sticky box may also have a container: a regular HTML element that contains the sticky box. The sticky box takes the first ancestor that could scroll as its scroll box and calculates all its coordinates relative to it.Ī sticky box needs at least one inset property. By default this is the browser window - or, more correctly, the layout viewport - but you can define another scroll box by setting overflow on the desired element.
Scroll box and containerĪ sticky box needs a scroll box: a box that is able to scroll. It is also useful for tables on narrow screens: you can keep headers or the leftmost table cells in view while the user scrolls. It is typically used to make sure that headers remain in view no matter how the user scrolls. If the container start or end scrolls past the sticky box abandons its fixed position and sticks to the top or the bottom of its container. A sticky box never escapes its container, though. A sticky box takes its normal position in the flow, as if it had position: relative, but if that position scrolls out of view the sticky box remains in a position defined by its inset properties, as if it has position: fixed. Position: sticky is a mix of relative and fixed. More information about this error may be availableĪdditionally, a 500 Internal Server ErrorĮrror was encountered while trying to use an ErrorDocument to handle the request. Please contact the server administrator to inform them of the time this error occurred,Īnd the actions you performed just before this error. Misconfiguration and was unable to complete The server encountered an internal error or (I already introduced this terminology earlier in the chapter.) 500 Internal Server Error Internal Server Error The inset properties are top, right, bottom and left. There will be something wrong with it please correct me where needed. So here’s my draft 1 of position: sticky. That’s partly because it works pretty intuitively in most cases, and partly because the details can be complicated. This is made worse by the fact that there are no very clear tutorials on sticky. I’m writing the position: sticky part of my book, and since I never worked with sticky before I’m not totally sure if what I’m saying is correct. “Performance has been of paramount importance for GreenSock, so there is always peace of mind for us, developers.Sitemap contact position: sticky, draft 1.“Aside from GreenSock’s laser-focused attention to detail, GSAP is fast, reliable, flexible, exceptional value (read: free in most cases) and, very importantly, supported.”.Vic C., “GreenSock has encouraged me to play with the code, to dream up new and exciting things to do.” “GSAP and CSS Transitions: I've done both, and its like comparing an F16 to a horse.“Truly, you folks on this forum are the nicest, least judgmental, helpful people I've ever “I was astonished by the speed and versatility of animating with GSAP.”.“Without GSAP I would have ditched front-end dev the day Flash officially died.”.I can't think of a better designed or better performing tool, and as a bonus, it's fun as heck to play with.” The people in this community take serious time to help you with upcoming issues on real life projects like I've never experienced “If every library were as robust and reliable as GreenSock’s, the world would be a much better place for software engineers and their clients. “GSAP has been absolutely the best experience for me as a newbie.
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