前端每日实战：14# 视频演示如何用纯 CSS 创做一种侧立图书的特效

时间 2019-11-06

标签前端每日实战视频演示如何 css 一种图书特效栏目 CSS 繁體版

原文原文链接

效果预览

按下右侧的“点击预览”按钮在当前页面预览，点击连接全屏预览。css

https://codepen.io/zhang-ou/pen/deVgRMhtml

可交互视频教程

此视频是能够交互的，你能够随时暂停视频，编辑视频中的代码。git

请用 chrome, safari, edge 打开观看。github

https://scrimba.com/c/cb6pkUEweb

源代码下载

请从 github 下载。chrome

https://github.com/comehope/front-end-daily-challenges/tree/master/014-three-languages-for-web-developmentdom

代码解读

定义 dom，一个容器中包含一个 span，span 内有文字：布局

<div class="book">
    <span>HTML</span>
</div>

居中显示：flex

html, body {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(to top left, white, dimgray);
}

画出书的正面：spa

.book {
    width: 12rem;
    height: 18rem;
    background: linear-gradient(navy, deeppink, tomato);
    transform: skewY(-10deg);
}

画出书的侧面：

.book {
    position: relative;
}

.book::before {
    content: '';
    position: absolute;
    width: 1.5rem;
    height: 100%;
    background: linear-gradient(navy, deeppink, tomato);
    top: 0;
    left: -1.5rem;
    transform: skewY(45deg);
    transform-origin: right;
    filter: brightness(0.6);
}

画出书的顶面：

.book::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 1.5rem;
    background: white;
    top: -1.5rem;
    left: 0;
    transform-origin: bottom;
    transform: skewX(45deg);
    filter: brightness(0.9);
}

给图书加阴影，让它显得更立体：

.book {
    box-shadow: -10px 5px 30px rgba(0, 0, 0, 0.5);
}

设置文字样式：

.book span {
    color: whitesmoke;
    font-size: 2.2rem;
    font-family: sans-serif;
    display: block;
    background: silver;
    text-align: center;
    height: 8rem;
    margin-top: 5rem;
    padding-top: 2rem;
    box-sizing: border-box;
    text-shadow: -2px 2px 10px rgba(0, 0, 0, 0.3);
    position: absolute;
    width: 100%;
}

画出文字侧面，与画图书侧面的方法类似：

.book span {
    position: relative;
}

.book span::before {
    content: '';
    position: absolute;
    width: 1.5rem;
    height: 100%;
    background: silver;
    top: 0;
    left: -1.5rem;
    transform-origin: right;
    transform: skewY(45deg);
    filter: brightness(0.6);
}

文字下增长一行小字号文字：

.book span::after {
    content: 'development';
    display: block;
    font-size: 1rem;
}

dom 改成 3 本书，包含在一个容器之中，而且分别命名样式类：

<div class="books">
    <div class="book html">
        <span>HTML</span>
    </div>
    <div class="book css">
        <span>CSS</span>
    </div>
    <div class="book js">
        <span>JavaScript</span>
    </div>
</div>

3 本书布局：

.books {
    display: flex;
    width: calc(12rem * 3 + 3rem * 2);
    justify-content: space-between;
    margin-top: 6rem;
}

.book:nth-child(2) {
    top: -3rem;
}

.book:nth-child(3) {
    top: -6rem;
}

3 本书配色：

.book.html span,
.book.html span::before {
    background: orange;
}

.book.css span,
.book.css span::before {
    background: yellowgreen;
}

.book.js span,
.book.js span::before {
    background: royalblue;
}

设置 3 本书的小字号文字：

.book.html span:after {
    content: '<devolopment />';
}

.book.css span::after {
    content: '.devolopment::';
}

.book.js span::after {
    content: '{ devolopment }';
}

最后，为图书增长鼠标划过效果：

.book {
    transition: 0.3s;
}

.book:hover {
    margin-top: -1.5rem;
}

大功告成！

知识点

justify-content https://developer.mozilla.org/en-US/docs/Web/CSS/justify-content
skewY() https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/skewY
skewX() https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/skewX
transform-origin https://developer.mozilla.org/en-US/docs/Web/CSS/transform-origin
brightness() https://developer.mozilla.org/en-US/docs/Web/CSS/filter-function/brightness