Sticky Elements and Flexbox: A Gotcha

Sticky positioning, used for elements that remain fixed at specified positions while scrolling, behaves unexpectedly when used with flexbox containers. This issue arises when flexbox elements default to stretch, resulting in elements with consistent heights that cannot be scrolled against.

To resolve this issue, add align-self: flex-start to the sticky element. This attribute sets the element's height to auto, allowing for scrolling and resolving the positioning problem.

It's important to note that browser support for position: sticky tables varies. Safari requires the -webkit- prefix, while Firefox currently experiences issues.

Here's an adjusted code snippet for reference:

.flexbox-wrapper {<br>  display: flex;<br>  overflow: auto;<br>  height: 200px;          /<em> Not necessary -- for example only </em>/<br>}<br>.regular {<br>  background-color: blue; /<em> Not necessary -- for example only </em>/<br>  height: 600px;          /<em> Not necessary -- for example only </em>/<br>}<br>.sticky {<br>  position: -webkit-sticky; /<em> for Safari </em>/<br>  position: sticky;<br>  top: 0;<br>  align-self: flex-start; /<em> <-- this is the fix </em>/<br>  background-color: red;  /<em> Not necessary -- for example only </em>/<br>}<br>

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