效果预览
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/JvmBdE
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/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, 容器中包含一行文本和 3 条做海浪特效的 <span>:
- <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;
- }
大功告成!
来源: https://segmentfault.com/a/1190000014895634