源码
<div class="box"></div>
<style>
	body {
		display: flex;
		justify-content: center;
		align-items: center;
		min-height: 100vh;
		background-image: radial-gradient(closest-side, rgba(255, 255, 255, 0.94), rgba(255, 255, 255, 0.94), white), url("https://s.electerious.com/images/codepen/grid.svg");
		background-repeat: no-repeat, repeat;
		background-size: auto, 75px 44px;
	}
	@keyframes transform {
		0% {
			transform: translate(-10px, -10px);
		}
		100% {
			transform: translate(-100px, -100px);
		}
	}
	@keyframes opacity {
		0% {
			opacity: .4;
			filter: blur(10px);
		}
		100% {
			opacity: .2;
			filter: blur(20px);
		}
	}
	.box {
		width: 140px;
		height: 140px;
		transform: rotateX(55deg) rotateZ(45deg);
	}
	.box::before,.box::after {
		content: '';
		position: absolute;
		top: 0;
		left: 0;
		width: 100%;
		height: 100%;
	}
	.box::before {
		background: black;
		animation: opacity 4s ease;
		animation-iteration-count: infinite;
		animation-direction: alternate;
	}
	.box::after {
		background: #2d84fc;
		animation: transform 4s ease;
		animation-iteration-count: infinite;
		animation-direction: alternate;
		box-shadow: 1px 1px 0 #1978fc, 2px 2px 0 #1978fc, 3px 3px 0 #1978fc, 4px 4px 0 #1978fc, 5px 5px 0 #1978fc;
	}
</style>本文内容仅供个人学习/研究/参考使用,不构成任何决策建议或专业指导。分享/转载时请标明原文来源,同时请勿将内容用于商业售卖、虚假宣传等非学习用途哦~感谢您的理解与支持!