纯 CSS 写出的层叠海浪特效

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https://scrimba.com/p/pEgDAM/cp2edUD

源代码下载

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

代码解读

定义 dom

<div class="sea">
    <p class="title">the sea</p>
    <span class="wave"></span>
    <span class="wave"></span>
    <span class="wave"></span>
</div>

居中显示:

html, body {
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(antiquewhite, navajowhite);
}

设置容器样式:

.sea {
    width: 300px;
    height: 300px;
    background-color: whitesmoke;
    background-image: linear-gradient(
        darkblue,
        rgba(255, 255, 255, 0) 80%,
        rgba(255, 255, 255, 0.5));
    border-radius: 5px;
    box-shadow: 0 2px 30px rgba(0, 0, 0, 0.2);
}

设置文字样式:

.sea {
    position: relative;
}
.sea .title {
    color: white;
    font-size: 24px;
    font-family: serif;
    text-align: center;
    line-height: 250px;
    text-transform: uppercase;
    letter-spacing: 0.4em;
    position: absolute;
    z-index: 1;
    width: 100%;
}

制作海浪动画效果:

.sea .wave {
    position: absolute;
    top: -250px;
    left: -100px;
    width: 500px;
    height: 500px;
    background: deepskyblue;
    border-radius: 43%;
    filter: opacity(0.4);
    animation: drift linear infinite;
}

.sea .wave:nth-of-type(1) {
    animation-duration: 5s;
}

.sea .wave:nth-of-type(2) {
    animation-duration: 7s;
}

.sea .wave:nth-of-type(3) {
    animation-duration: 9s;
}

@keyframes drift {
    from {
        transform: rotate(360deg);
    }
}

加大海浪的波动幅度,增加颜色差异:

.sea .wave {
    transform-origin: 50% 48%;
}
.sea .wave:nth-of-type(3) {
    background-color: orangered;
    filter: opacity(0.1);
}

最后,隐藏容器外的内容:

.sea {
    overflow: hidden;
}

成功

转载自:https://segmentfault.com/a/1190000014895634

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