CSS 参考手册

CSS 参考手册 CSS 浏览器支持 CSS 选择器 CSS 函数 CSS 听觉 CSS Web 安全字体 CSS 动画相关属性 CSS 单位 CSS PX-EM 转换 CSS 颜色 CSS 颜色值 CSS 默认值 CSS 实体

CSS 属性

align-content align-items align-self all animation animation-delay animation-direction animation-duration animation-fill-mode animation-iteration-count animation-name animation-play-state animation-timing-function backface-visibility background background-attachment background-blend-mode background-clip background-color background-image background-origin background-position background-repeat background-size border border-bottom border-bottom-color border-bottom-left-radius border-bottom-right-radius border-bottom-style border-bottom-width border-collapse border-color border-image border-image-outset border-image-repeat border-image-slice border-image-source border-image-width border-left border-left-color border-left-style border-left-width border-radius border-right border-right-color border-right-style border-right-width border-spacing border-style border-top border-top-color border-top-left-radius border-top-right-radius border-top-style border-top-width border-width bottom box-decoration-break box-shadow box-sizing break-after break-before break-inside caption-side caret-color @charset clear clip clip-path color column-count column-fill column-gap column-rule column-rule-color column-rule-style column-rule-width column-span column-width columns content counter-increment counter-reset cursor direction display empty-cells filter flex flex-basis flex-direction flex-flow flex-grow flex-shrink flex-wrap float font @font-face font-family font-feature-settings font-kerning font-size font-size-adjust font-stretch font-style font-variant font-variant-caps font-weight grid grid-area grid-auto-columns grid-auto-flow grid-auto-rows grid-column grid-column-end grid-column-gap grid-column-start grid-gap grid-row grid-row-end grid-row-gap grid-row-start grid-template grid-template-areas grid-template-columns grid-template-rows hanging-punctuation height hyphens @import isolation justify-content @keyframes left letter-spacing line-height list-style list-style-image list-style-position list-style-type margin margin-bottom margin-left margin-right margin-top max-height max-width @media min-height min-width mix-blend-mode object-fit object-position opacity order outline outline-color outline-offset outline-style outline-width overflow overflow-x overflow-y padding padding-bottom padding-left padding-right padding-top page-break-after page-break-before page-break-inside perspective perspective-origin pointer-events position quotes resize right scroll-behavior tab-size table-layout text-align text-align-last text-decoration text-decoration-color text-decoration-line text-decoration-style text-indent text-justify text-overflow text-shadow text-transform top transform transform-origin transform-style transition transition-delay transition-duration transition-property transition-timing-function unicode-bidi user-select vertical-align visibility white-space width word-break word-spacing word-wrap writing-mode z-index




Px/Em 换算

Px/Em 换算器

以下工具提供了 em 和 px 的换算工具。

  • 第一个输入框:设置了网页默认的字体像素 (通常 16px)
  • 第二个输入框:输入像素值,可以将 px 换算为 em。
  • 第三个输入框:输入em(相对长度单位)值,可以将 em 换算为 px。

设置默认的像素大小:

px

PX 换算为 EM::
px

EM 换算为 PX:
em


换算结果:




正文字体大小

下表列出了在网页字体默认值为 16px 时, px 和 em 及网页字体百分比的换算数据。

提示: 默认字体大小通常为 16px。

PX、EM 和百分比之间的区别是什么?

像素是静态测量,而百分比和 EM 是相对测量。EM 的大小或百分比取决于其父级。 如果正文的文本大小是 16 像素,那么 150% 或 1.5 EM 将是 24 像素(1.5*16)。 更多测量单位请查看 CSS 单位