38.纯 CSS 创作阶梯文字特效

原文地址：https://segmentfault.com/a/1190000015107942

HTML code：

<div class="container">
    <p>
        <span>stay</span>
        <span>hungry</span>
    </p>
    <p>
        <span>hungry</span>
        <span>stay</span>
    </p>
    <p>
        <span>stay</span>
        <span>foolish</span>
    </p>
</div>

CSS code:

html, body {
    margin: 0;
    padding: 0;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: black;
}
/* 把段落的行高改为 1 行文本高，3 个段落各占一行 */
.container p {
    color: white;
    font-size: 30px;
    font-family: sans-serif;
    font-weight: bold;
    text-transform: uppercase;
    margin: 0;
    height: 1em;
    overflow: hidden;
    /* 让文字偏左一些，抵销因倾斜造成的位移 */
    position: relative;
    left: -0.8em;
}
.container p span{
    display: block;
    text-align: center;
    line-height: 1em;
    /* 定义让文字上下移动的动画 */
    animation: lettering 3s infinite ease-in-out alternate;
}
@keyframes lettering {
    to {
        transform: translateY(-100%);
    }
}
/* 让文字倾斜变形 */
.container p:nth-child(odd){
    transform: skewY(-30deg) skewX(45deg) scaleY(1.3333);
}
.container p:nth-child(even){
    transform: skewY(-30deg) scaleY(1.3333);
}
/* 对齐文字 */
.container p:nth-child(2){
    margin-left: 1.3em;
}
.container p:nth-child(3) {
    margin-left: 2.6em;
}