[1] [CITE@en[Sticky Positioning]]
( ([[Edward O'Connor]] 著, [TIME[2012-06-27 08:50:51 +09:00]] 版))
<http://lists.w3.org/Archives/Public/www-style/2012Jun/0627.html>

[2] [CITE@en[Add renotify, silent, noscreen and sticky as attributes. · a6ec581 · whatwg/notifications]]
([TIME[2015-02-28 11:31:24 +09:00]] 版)
<https://github.com/whatwg/notifications/commit/a6ec581bfb32d5e66a892ca74544a9f9c129d48e>

[FIG(quote)[
[FIGCAPTION[
[3] [CITE@en[Safari 7.0]]
([TIME[2015-11-04 23:08:38 +09:00]] 版)
<https://developer.apple.com/library/safari/releasenotes/General/WhatsNewInSafari/Articles/Safari_7_0.html#//apple_ref/doc/uid/TP40014305-CH5-SW23>
]FIGCAPTION]

> The new CSS property value position:-webkit-sticky allows a page element to implement “sticky” scrolling behavior, constrained by the page’s viewport or a scrollable ancestor, without resorting to asynchronous JavaScript scroll events that can interfere with smooth scrolling.
> 

]FIG]


[4] [CITE@en[Remove sticky and screen off features]]
([[annevk]]著, [TIME[2016-11-04 19:38:50 +09:00]])
<https://github.com/whatwg/notifications/commit/9a63989a0906d7191a11d637064b06bfaee31b09>

[5] [CITE@en[position:sticky is back in Chrome  |  Web  |  Google Developers]]
([TIME[2016-12-22 00:35:52 +09:00]])
<https://developers.google.com/web/updates/2016/12/position-sticky>

[6] [CITE@en[Performant Parallaxing  |  Web  |  Google Developers]]
([TIME[2016-12-22 00:35:53 +09:00]])
<https://developers.google.com/web/updates/2016/12/performant-parallaxing>

[7] [CITE@en[An event for CSS position:sticky  |  Web  |  Google Developers]]
([TIME[2017-09-28 01:21:07 +09:00]])
<https://developers.google.com/web/updates/2017/09/sticky-headers>


[8] 
[CODE[thead]] や [CODE[tfoot]] で上下に固定はできますけれども、
左右それぞれ複数個の[[こま]]を固定したいときは[[こま]]をグループ化する方法がないのでちょっと面倒ですね。