flex-shrink

 

La proprietà CSS flex-shrink setta il fattore di restringimento di un elemento flessibile. Se la dimensione di tutti gli elementi flessibili è maggiore del loro contenitore flessibile: gli elementi si restringono per adattarsi secondo il valore impostato di flex-shrink.

Sintassi

/* <number> valori */
flex-shrink: 2;
flex-shrink: 0.6;

/* Valori globali */
flex-shrink: inherit;
flex-shrink: initial;
flex-shrink: unset;

La proprietà flex-shrink è specificata come un singolo <number>.

Valori

<number>
Guarda <number>. Non sono ammessi valori negativi.

Sintassi formale

<number>

Esempio

HTML

<p>La larghezza del contenuto è di 500 px; la base flessibile degli articoli flessibili è 120 px.</p>
<p>A, B, C hanno il valore flex-shrink:1 invece D ed E hanno flex-shrink:2 </p>
<p>La larghezza di D ed E è minore delle altre.</p>
<div id="content">
  <div class="box" style="background-color:red;">A</div>
  <div class="box" style="background-color:lightblue;">B</div>
  <div class="box" style="background-color:yellow;">C</div>
  <div class="box1" style="background-color:brown;">D</div>
  <div class="box1" style="background-color:lightgreen;">E</div>
</div>

CSS

#content {
  display: flex;
  width: 500px;
}

#content div {
  flex-basis: 120px;
  border: 3px solid rgba(0,0,0,.2);
}

.box {
  flex-shrink: 1;
}

.box1 {
  flex-shrink: 2;
}

Result

Specifiche

Specifiche Stato Commento
CSS Flexible Box Layout Module
The definition of 'flex-shrink' in that specification.
Candidate Recommendation Definizione iniziale
Initial value1
Applies toflex items, including in-flow pseudo-elements
Inheritedno
Mediavisual
Computed valueas specified
Animation typea number
Canonical orderthe unique non-ambiguous order defined by the formal grammar

Compatibilità dei browser

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
flex-shrinkChrome Full support 29
Full support 29
Full support 21
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Edge Full support 12
Full support 12
Full support 12
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Firefox Full support 20
Notes
Full support 20
Notes
Notes Since Firefox 28, multi-line flexbox is supported.
Notes Before Firefox 32, Firefox wasn't able to animate values starting or stopping at 0.
Full support 49
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Full support 44
Prefixed Disabled
Prefixed Implemented with the vendor prefix: -webkit-
Disabled From version 44: this feature is behind the layout.css.prefixes.webkit preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support 18 — 20
Disabled
Disabled From version 18 until version 20 (exclusive): this feature is behind the layout.css.flexbox.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
IE Full support 10
Notes
Full support 10
Notes
Notes Internet Explorer 10 uses 0 instead of 1 as the initial value for the flex-shrink property. A workaround is to always set an explicit value for flex-shrink. See Flexbug #6 for more info.
Opera Full support 12.1
Full support 12.1
Full support 15
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Safari Full support 9
Full support 9
Full support 8
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
WebView Android Full support 4.4
Full support 4.4
Full support ≤37
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Chrome Android Full support 29
Full support 29
Full support 25
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Firefox Android Full support 20
Notes
Full support 20
Notes
Notes Since Firefox 28, multi-line flexbox is supported.
Notes Before Firefox 32, Firefox wasn't able to animate values starting or stopping at 0.
Full support 49
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Full support 44
Prefixed Disabled
Prefixed Implemented with the vendor prefix: -webkit-
Disabled From version 44: this feature is behind the layout.css.prefixes.webkit preference (needs to be set to true). To change preferences in Firefox, visit about:config.
No support 18 — 20
Disabled
Disabled From version 18 until version 20 (exclusive): this feature is behind the layout.css.flexbox.enabled preference (needs to be set to true). To change preferences in Firefox, visit about:config.
Opera Android Full support 12.1
Full support 12.1
Full support 14
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Safari iOS Full support 9
Full support 9
Full support 8
Prefixed
Prefixed Implemented with the vendor prefix: -webkit-
Samsung Internet Android ?

Legend

Full support  
Full support
Compatibility unknown  
Compatibility unknown
See implementation notes.
See implementation notes.
User must explicitly enable this feature.
User must explicitly enable this feature.
Requires a vendor prefix or different name for use.
Requires a vendor prefix or different name for use.

Guarda anche