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CSS 參考

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CSS 屬性

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-shadow box-sizing caption-side clear clip 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-size font-size-adjust font-stretch font-style font-variant font-weight hanging-punctuation height 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 nav-down nav-index nav-left nav-right nav-up 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 position quotes resize right 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 vertical-align visibility white-space width word-break word-spacing word-wrap z-index

CSS .class Selector

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例

選擇和風格的所有元素class="intro" ：

.intro {
background-color: yellow;
}

更多"Try it Yourself"下面的例子。

定義和用法

該.class選擇器選擇與特定的類屬性的元素。

選擇具有特定的類元素，寫了一段(.)字符，隨後是類的名稱。

您還可以指定只有特定的HTML元素應該由類的影響。要做到這一點，開始與該元素的名稱，然後寫週期(.)字符，然後是類的名稱(look at Example 1 below) 。

HTML元素也可以指一個以上的類(look at Example 2 below)

版：	CSS1

瀏覽器支持

選擇
.class	是	是	是	是	是

CSS語法

. class {
css declarations ;
} Demo

更多示例

例1

樣式的所有<p>與要素class="hometown" ：

p.hometown {
background-color: yellow;
}

例2

這<p>元素西港島線根據其樣式class="center"和以class="large" ：

<p class="center large">This paragraph refers to two classes.</p>

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