::-webkit-meter-even-less-good-value

Non-standard: This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.

The ::-webkit-meter-even-less-good-value styles the <meter> element when the value and the optimum attributes fall outside the low-high range, but in opposite zones. To illustrate, it applies when value < low < high < optimum or value > high > low > optimum.

Red is the default color.

Syntax

css
::-webkit-meter-even-less-good-value {
  /* ... */
}

Examples

HTML

html
Normal:
<meter min="0" max="10" low="3" high="7" optimum="8" value="2">
  Score 2/10
</meter>
<br />
Styled:
<meter id="styled" min="0" max="10" low="3" high="7" optimum="8" value="2">
  Score 2/10
</meter>

CSS

css
body {
  font-family: monospace;
}

.safari meter {
  /* Reset the default appearance for Safari only */
  /* .safari class is added via JavaScript */
  -webkit-appearance: none;
}

#styled::-webkit-meter-even-less-good-value {
  background: linear-gradient(to bottom, #f77, #900 45%, #900 55%, #f77);
  height: 100%;
  box-sizing: border-box;
}

JavaScript

js
// Safari requires <meter> elements to have an `appearance` of `none` for custom styling
// using `::-webkit-meter-*` selectors, but `appearance: none` breaks rendering on Chrome.
// Therefore, we must check if the browser is Safari-based.

const is_safari =
  navigator.userAgent.includes("AppleWebKit/") &&
  !navigator.userAgent.includes("Chrome/");

if (is_safari) {
  document.body.classList.add("safari");
}

Result

Specifications

Not part of any standard.

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
::-webkit-meter-even-less-good-value
Non-standard

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support
Non-standard. Check cross-browser support before using.

See also

The pseudo-elements used by WebKit/Blink to style other parts of a <meter> element are as follows: