.toShop-btn{
position: fixed
top:730rpx
width: 81rpx
height:91rpx
line-height: 48px
z-index:99
right:0rpx
-moz-animation: myfirst 1s infinite
-webkit-animation: myfirst 1s infinite
-o-animation: myfirst 1s infinite
animation: myfirst 1s infinite
}
@keyframes myfirst{
0% { transform: scale(.8)}
50% { transform: scale(1)}
100% { transform: scale(.8)}
}
<style type="text/css">.font{font-size:12px}
.a{font-size:14px}
.b{font-size:16px}
.c{font-size:18px}
.d{font-size:20px}
//这里是最不好的表现形式，可以利用js里面的动画函数来执行并循环
}
</style>
<div class="font">我这是测试</div>
<div class="a">我这是测试</div>
<div class="b">我这是测试</div>
<div class="c">我这是测试</div>
<div class="d">我这是测试</div>
