纯 CSS 创作出平滑的层叠海浪特效
这里的波浪只是侧面的,利用几个平面一部分弧旋转得到。
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!
实现效果:https://codepen.io/comehope/pen/JvmBdE
来自:https://segmentfault.com/a/1190000014895634
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