纯CSS3做动画,完全不兼容IE10之前的浏览器
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gif录得有点卡,拷个代码在本地体验一下。
HTML代码
<div id="container">
<div class='circle circle--1'></div>
<div class='circle circle--2'></div>
<div class='circle circle--3'></div>
<div class='circle circle--4'></div>
<div class='circle circle--5'></div>
<div class='circle circle--6'></div>
</div>
CSS代码
#container {
width: 500px;
height: 500px;
position: relative;
margin: 100px auto 0;
transition: opacity 1s;
}
.circle {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
border-radius: 50%;
animation: pulse 3s infinite ease-in-out;
background: #487ad3;
}
.circle--1 {
opacity: 1;
animation-delay: 0.12s;
}
.circle--2 {
opacity: 0.5;
animation-delay: 0.24s;
}
.circle--3 {
opacity: 0.3333;
animation-delay: 0.36s;
}
.circle--4 {
opacity: 0.25;
animation-delay: 0.48s;
}
.circle--5 {
opacity: 0.2;
animation-delay: 0.6s;
}
.circle--6 {
opacity: 0.1666;
animation-delay: 0.72s;
}
.circle--1 {
width: 10%;
height: 10%;
}
.circle--2 {
width: 20%;
height: 20%;
}
.circle--3 {
width: 30%;
height: 30%;
}
.circle--4 {
width: 40%;
height: 40%;
}
.circle--5 {
width: 50%;
height: 50%;
}
.circle--6 {
width: 60%;
height: 60%;
}
@keyframes pulse {
0% {
transform: translate(-50%, -50%) scale(1);
}
25% {
transform: translate(-50%, -50%) scale(1.3);
}
50% {
transform: translate(-50%, -50%) scale(0.70);
}
75% {
transform: translate(-50%, -50%) scale(1);
}
}
section {
width: 500px;
height: 40px;
margin: 10px auto 0;
display: flex;
justify-content: space-around;
}
section > div {
width: 100px;
height: 100%;
background-image: linear-gradient( 135deg, #52E5E7 10%, #130CB7 100%);
text-align: center;
line-height: 40px;
color: #fff;
font-weight: 600;
font-size: 18px;
letter-spacing: 4px;
border-radius: 10px;
}
@keyframes: 定义动画用的。后面跟着动画名,大括号里设置要改变的属性。
animation: 会用动画。后面跟着动画名。
animation里面的 infinite 说明重复执行动画。
opacity: 设置不透明度。
animation-delay: 延迟执行。
display: flex 弹性盒布局
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