CSS 彩虹按钮效果

<template>
	<view class="content">
	  <button class="btn">彩虹按钮</button>
	</view>
</template>

<script>

</script>

<style>
	body{
		background-color: #000;
	}
	.content {
		margin-top: 300px;
	
	}

	
	.btn {
	  width: 170px;
	  height: 60px;
	  font-size: 18px;
	  background: #fff;
	  border: none;
	  border-radius: 50px;
	  color: #000;
	  outline: none;
	  cursor: pointer;
	  transition: all 0.4s;
	  align-items: center;
	  display: flex;
	  justify-content: center;
	}
	
	.btn:hover {
	  box-shadow: inset 0 0 0 4px #ef476f, 
	              inset 0 0 0 8px #ffd166, 
	              inset 0 0 0 12px #06d6a0,
	              inset 0 0 0 16px #118ab2;
	  background: #073b4c;
	  color: #fff;
	}
</style>