首先我们从结构和样式两个方面来讲解以上动图的实现过程:
Html结构:
<div class="square"> <span></span> <span></span> <span></span> <div class="content"> <h2>Post Title</h2> <p>In order to better understand how to create your own Vue.js plugins, we will create a very simplified version of a plugin that displays i18n ready strings.</p> <a href="#">Read More</a> </div> </div>
最外层类名为square元素包裹着以类名为content里面是文字和按钮,3个span元素组成了水波纹
CSS样式:
以下是效果图的基本样式,设置body黑色背景,高度为浏览器100%高度,body里面的元素垂直居中
@import url('https://fonts.googleapis.com/css?family=Open+Sans:400,600,700&display=swap'); * { margin: 0; padding: 0; box-shadow: border-box; font-family: 'Open Sans', sans-serif; } body { display: flex; justify-content: center; align-items: center; min-height: 100vh; background: #000; }
接下来设置body下最外层元素的样式,长宽为400像素,子元素垂直水平居中
.square { position: relative; width: 400px; height: 400px; display: flex; justify-content: center; align-items: center; }
这里的span元素就是效果图中的波纹,有3层,分别相对父元素绝对定位,长宽等于父元素,然后设置宽度为2个像素颜色为白色的的border,之所以为不规则的椭圆,是因为设置了四个角都不相等的角的弧度值。
.square span { position: absolute; top: 0; left: 0; width: 100%; height: 100%; border: 2px solid #fff; border-radius: 38% 62% 63% 37% / 41% 44% 56% 59%; }
然后我们要让波纹转动起来,添加animation动画属性,动画持续时间0.5s,线性循环
.square span { transition: 0.5s; animation: animate 6s linear infinite; }
animate动画均匀旋转360度,另一个相反方向旋转
@keyframes animate { 0% { transform: rotate(0deg); } 100% { transform: rotate(360deg); } } @keyframes animate2 { 0% { transform: rotate(360deg); } 100% { transform: rotate(0deg); } }
三个span元素分别设置不同的动画和持续时间
.square span:nth-child(1) { animation: animate 6s linear infinite; } .square span:nth-child(2) { animation: animate 4s linear infinite; } .square span:nth-child(3) { animation: animate2 10s linear infinite; }
设置类名content里面文字样式白色居中,以及设置“Read More”按钮样式,不规则边框
.content { position: relative; padding: 40px 60px; color: #fff; text-align: center; transition: 0.5s; z-index: 1000; } .content a { position: relative; display: inline-block; margin-top: 10px; border: 2px solid #fff; padding: 6px 18px; text-decoration: none; color: #fff; font-weight: 600; border-radius: 73% 27% 44% 56% / 49% 44% 56% 51%; } .content a:hover { background: #fff; color: #333; }