如何用純CSS 實現一個顏色卡的效果

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這篇文章主要介紹了關於如何用純CSS 實現一個顏色卡的效果,有著一定的參考價值,現在分享給大家,有需要的朋友可以參考一下

原始碼下載

每日前端實戰系列的全部原始碼請從 github 下載:

https://github.com/comehope/front-end-daily-challenges

代碼解讀

定義 dom,容器中包含 8 個元素:

<p class="cards">    <span></span>    <span></span>    <span></span>    <span></span>    <span></span>    <span></span>    <span></span>    <span></span></p>

置中顯示:

body {    margin: 0;    height: 100vh;    display: flex;    align-items: center;    justify-content: center;    background-color: lightgray;}

重定義盒模型:

.cards,.cards > * {    box-sizing: border-box;}

定義容器尺寸:

.cards {    width: 20em;    height: 20em;}

畫出色卡:

.cards span {    position: absolute;    width: 10em;    height: 3em;    background-color: lightgreen;    top: calc(50% - 3em / 2);    border: 0.2em solid dimgray;    border-radius: 0.3em 0.8em 0.8em 0.3em;}

用虛擬元素畫出色卡的標籤:

.cards span::before {    content: '';    position: absolute;    width: 35%;    height: 100%;    background-color: white;    right: 0;    border-radius: 0 0.6em 0.6em 0;    border-left: 0.2em solid silver;}

用虛擬元素畫出色卡標籤上的文字:

.cards span::after {    content: '';    position: absolute;    width: 0.4em;    height: 2em;    background-color: silver;    left: 6.5em;    top: 0.1em;    box-shadow: 0.7em 0 0 -0.1em silver;}

為色卡設定變數:

.cards span:nth-child(1) {    --n: 1;}.cards span:nth-child(2) {    --n: 2;}.cards span:nth-child(3) {    --n: 3;}.cards span:nth-child(4) {    --n: 4;}.cards span:nth-child(5) {    --n: 5;}.cards span:nth-child(6) {    --n: 6;}.cards span:nth-child(7) {    --n: 7;}.cards span:nth-child(8) {    --n: 8;}

用 HSL 色彩模式為色卡上色:

.cards span {    background-color: hsl(calc(360 / 8 * var(--n)), 80%, 70%);}

定義動畫效果:

.cards span {    transform-origin: right;    animation: rotating 3s linear infinite;}@keyframes rotating {    0%, 35% {        transform: rotate(0deg);    }    90%, 100% {        transform: rotate(360deg);    }}

最後,設定動畫延時,讓卡片依次旋轉:

.cards span {    animation-delay: calc((var(--n) - 8) * 0.15s);}

大功告成!

以上就是本文的全部內容,希望對大家的學習有所協助,更多相關內容請關注topic.alibabacloud.com!

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