如何用纯 CSS 创作牛奶文字变换效果

偏执的太偏执、 2022-04-15 05:42 226阅读 0赞

![1504257-20181122110343152-1643552231.png][]

## 效果预览 ##

[在线演示][Link 1]

按下右侧的“点击预览”按钮可以在当前页面预览，点击链接可以全屏预览。

[https://codepen.io/comehope/pen/MGNWOm][https_codepen.io_comehope_pen_MGNWOm]

## 可交互视频教程 ##

此视频是可以交互的，你可以随时暂停视频，编辑视频中的代码。

请用 chrome, safari, edge 打开观看。

[https://scrimba.com/p/pEgDAM/cvPryA6][https_scrimba.com_p_pEgDAM_cvPryA6]

## 源代码下载 ##

[本地下载][Link 2]

每日前端实战系列的全部源代码请从 github 下载：

[https://github.com/comehope/front-end-daily-challenges][https_github.com_comehope_front-end-daily-challenges]

## 代码解读 ##

定义 DOM，容器中包含 2 段文本：

<div class="container">
        <p>Explorer</p>
        <p>Discovery</p>
    </div>

居中显示：

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

设置字体样式：

p {
        color: white;
        font-size: 100px;
        font-weight: bold;
        font-family: sans-serif;
        text-transform: uppercase;
        text-align: center;
    }

让 2 段文本重叠：

p {
        margin: 0;
    }
    
    p:nth-child(1) {
        transform: translateY(50%);
    }
    
    p:nth-child(2) {
        transform: translateY(-50%);
    }

定义动画，让 2 段文本交替显示：

p {
        animation: show-hide 10s infinite;
        filter: opacity(0);
    }
    
    p:nth-child(1) {
        animation-direction: normal;
    }
    
    p:nth-child(2) {
        animation-direction: reverse;
    }
    
    @keyframes show-hide {
        0% {
            filter: opacity(0);
        }
    
        25% {
            filter: opacity(1);
        }
    
        40% {
            filter: opacity(1);
        }
    
        50% {
            filter: opacity(0);
        }
    }

增加字间距的变化效果：

@keyframes show-hide {
        0% {
            filter: opacity(0);
            letter-spacing: -0.8em;
        }
    
        25% {
            filter: opacity(1);
        }
    
        40% {
            filter: opacity(1);
        }
    
        50% {
            filter: opacity(0);
            letter-spacing: 0.24em;
        }
    }

增加文本模糊效果：

@keyframes show-hide {
        0% {
            filter: opacity(0) blur(0.08em);
            letter-spacing: -0.8em;
        }
    
        25% {
            filter: opacity(1) blur(0.08em);
        }
    
        40% {
            filter: opacity(1) blur(0.24em);
        }
    
        50% {
            filter: opacity(0) blur(0.24em);
            letter-spacing: 0.24em;
        }
    }

最后，为容器设置对比度滤镜：

.container {
        filter: contrast(10);
        background-color: black;
        overflow: hidden;
    }

大功告成！

原文地址：[https://segmentfault.com/a/1190000015037234][https_segmentfault.com_a_1190000015037234]

[1504257-20181122110343152-1643552231.png]: /images/20220415/3b6e9506a6e74ea8904ac49540f9383c.png
[Link 1]: https://www.jqhtml.com/yanshi?demourl=%2Fwp-content%2Fuploads%2F2018%2F11%2Ffront-end-daily-challenges-master%2F033-milk-text-effect&demotitle=%E7%BA%AF%20CSS%20%E5%88%9B%E4%BD%9C%E7%89%9B%E5%A5%B6%E6%96%87%E5%AD%97%E5%8F%98%E6%8D%A2%E6%95%88%E6%9E%9C
[https_codepen.io_comehope_pen_MGNWOm]: https://codepen.io/comehope/pen/MGNWOm
[https_scrimba.com_p_pEgDAM_cvPryA6]: https://scrimba.com/p/pEgDAM/cvPryA6
[Link 2]: http://www.jqhtml.com/19286.html
[https_github.com_comehope_front-end-daily-challenges]: https://github.com/comehope/front-end-daily-challenges
[https_segmentfault.com_a_1190000015037234]: https://segmentfault.com/a/1190000015037234