::-webkit-meter-even-less-good-value
Non-standard: This feature is not standardized. We do not recommend using non-standard features in production, as they have limited browser support, and may change or be removed. However, they can be a suitable alternative in specific cases where no standard option exists.
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, #ff7777, #990000 45%, #990000 55%, #ff7777 ); 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 isSafari = navigator.userAgent.includes("AppleWebKit/") && !navigator.userAgent.includes("Chrome/"); if (isSafari) { document.body.classList.add("safari"); } Result
Specifications
Not part of any standard.
Browser compatibility
See also
The pseudo-elements used by WebKit/Blink to style other parts of a <meter> element are as follows: