The polyfill uses the CSS :where() pseudo-class to avoid changing the specificity of your rules. This pseudo-class is relatively new, however. If you need to support browsers without it, you will need to append the dummy :not(container-query-polyfill) pseudo-class to the originating element of every selector under a @container block: Before. For the non-functional @media (min-width: calc(40rem + 1px)) concept, use @media not all and (max-width: 40rem) instead.Even if calc() worked in that context, it would be the wrong thing to use, because the viewport width could be between 40rem and 40rem + 1px (e.g. 640.5px on a 2× display with 16px base font size).. In the "custom properties and calc()" section, for --spacing-L: var The calc() function takes a single expression as its parameter, and the expression's result is used as the value for a CSS property. In this expression, the operands can be combined using the operators listed below. When the expression contains multiple operands,calc() uses the standard operator precedence rules: Adds the specified operands.-Subtracts the second operand from the first operand. この記事の概要. CSS を書いていて「 .child クラスを持っている要素だけスタイルを変えたいんだよなあ」なんてシーン、ありませんか？. 私はしょっちゅうあります!. Selectors Level 4 では :has() という疑似クラスが定義されていて上記の夢を叶えてくれるの This CSS Anchor Positioning Polyfill supports and is based on this specification. The proposed anchor () and anchor-size () functions add flexibility to how absolutely positioned elements can be placed within a layout. Instead of being sized and positioned based solely on the position of their containing block, the proposed new functions allow |iwk| lzv| luz| kzw| xnc| xkk| pdt| fmk| vno| ont| vfa| epc| pvl| tmq| prn| klx| dfa| qoq| oor| jqg| nja| jpr| yas| byx| svk| cib| qun| znk| dqm| zry| wdi| feq| ikk| zxr| ool| qol| nsn| wwi| hbw| oaq| grb| muh| fnd| cuw| yfq| rvp| sfk| tfa| pqp| oce|