[1] CSS の 'position'
特性は、
箱の位置付け方式や配置の方法の決定に関する指定を行います。
[5] 利用者エージェントは根要素の位置を 'static'
として扱っても構いません CSS 2.1。
[6] Web Controls 1.0 ( ( 版)) <http://www.whatwg.org/specs/web-controls/current-work/#changes0>
[7] Web Applications Markup Language 1.0 ( ( 版)) <http://hixie.ch/specs/html/apps/web-apps-1#changes0>
[8] CSS Positioned Layout Module Level 3 ( ( 版)) <http://www.w3.org/TR/2012/WD-css3-positioning-20120207/>
[9] CSS Positioned Layout - Tab Completion ( ( 版)) <http://www.xanthir.com/blog/b48H0>
[10] CSS Positioned Layout Module Level 3 ( ( 版)) <http://www.w3.org/TR/2015/WD-css3-positioning-20150203/>
[11] Fix #21: make position:sticky compute to absolute · whatwg/fullscreen@dfdd8ae ( 版) <https://github.com/whatwg/fullscreen/commit/dfdd8ae02010b94b60bdc2d35c15227c6194c565>
[12] notriddle/ServoHypothetical: Hypothetical box layout for absolute positioning () <https://github.com/notriddle/ServoHypothetical/>
[13] () <https://notriddle.github.io/ServoHypothetical/>
[14] Deprecations and removals in Chrome 66 | Web | Google Developers () <https://developers.google.com/web/updates/2018/03/chrome-66-deprecations>