css粒子背景动画效果

源码

<div class="particel">
	<div class="starsec"></div>
	<div class="starthird"></div>
	<div class="starfourth"></div>
	<div class="starfifth"></div>
</div>

<style>
	html,
	body {
		height: 100%;
		overflow: hidden;
	}

	body {
		padding: 0;
		margin: 0;
		background: #181828;
		font-size: 14px;
		line-height: 1;
	}

	.starsec {
		content: " ";
		position: absolute;
		width: 3px;
		height: 3px;
		background: transparent;
		box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
		animation: animStar 150s linear infinite;
	}

	.starthird {
		content: " ";
		position: absolute;
		width: 3px;
		height: 3px;
		background: transparent;
		box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
		animation: animStar 10s linear infinite;
	}

	.starfourth {
		content: " ";
		position: absolute;
		width: 2px;
		height: 2px;
		background: transparent;
		box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
		animation: animStar 50s linear infinite;
	}

	.starfifth {
		content: " ";
		position: absolute;
		width: 1px;
		height: 1px;
		background: transparent;
		box-shadow: 571px 173px #00BCD4, 1732px 143px #00BCD4, 1745px 454px #FF5722, 234px 784px #00BCD4, 1793px 1123px #FF9800, 1076px 504px #03A9F4, 633px 601px #FF5722, 350px 630px #FFEB3B, 1164px 782px #00BCD4, 76px 690px #3F51B5, 1825px 701px #CDDC39, 1646px 578px #FFEB3B, 544px 293px #2196F3, 445px 1061px #673AB7, 928px 47px #00BCD4, 168px 1410px #8BC34A, 777px 782px #9C27B0, 1235px 1941px #9C27B0, 104px 1690px #8BC34A, 1167px 1338px #E91E63, 345px 1652px #009688, 1682px 1196px #F44336, 1995px 494px #8BC34A, 428px 798px #FF5722, 340px 1623px #F44336, 605px 349px #9C27B0, 1339px 1344px #673AB7, 1102px 1745px #3F51B5, 1592px 1676px #2196F3, 419px 1024px #FF9800, 630px 1033px #4CAF50, 1995px 1644px #00BCD4, 1092px 712px #9C27B0, 1355px 606px #F44336, 622px 1881px #CDDC39, 1481px 621px #9E9E9E, 19px 1348px #8BC34A, 864px 1780px #E91E63, 442px 1136px #2196F3, 67px 712px #FF5722, 89px 1406px #F44336, 275px 321px #009688, 592px 630px #E91E63, 1012px 1690px #9C27B0, 1749px 23px #673AB7, 94px 1542px #FFEB3B, 1201px 1657px #3F51B5, 1505px 692px #2196F3, 1799px 601px #03A9F4, 656px 811px #00BCD4, 701px 597px #00BCD4, 1202px 46px #FF5722, 890px 569px #FF5722, 1613px 813px #2196F3, 223px 252px #FF9800, 983px 1093px #F44336, 726px 1029px #FFC107, 1764px 778px #CDDC39, 622px 1643px #F44336, 174px 1559px #673AB7, 212px 517px #00BCD4, 340px 505px #FFF, 1700px 39px #FFF, 1768px 516px #F44336, 849px 391px #FF9800, 228px 1824px #FFF, 1119px 1680px #FFC107, 812px 1480px #3F51B5, 1438px 1585px #CDDC39, 137px 1397px #FFF, 1080px 456px #673AB7, 1208px 1437px #03A9F4, 857px 281px #F44336, 1254px 1306px #CDDC39, 987px 990px #4CAF50, 1655px 911px #00BCD4, 1102px 1216px #FF5722, 1807px 1044px #FFF, 660px 435px #03A9F4, 299px 678px #4CAF50, 1193px 115px #FF9800, 918px 290px #CDDC39, 1447px 1422px #FFEB3B, 91px 1273px #9C27B0, 108px 223px #FFEB3B, 146px 754px #00BCD4, 461px 1446px #FF5722, 1004px 391px #673AB7, 1529px 516px #F44336, 1206px 845px #CDDC39, 347px 583px #009688, 1102px 1332px #F44336, 709px 1756px #00BCD4, 1972px 248px #FFF, 1669px 1344px #FF5722, 1132px 406px #F44336, 320px 1076px #CDDC39, 126px 943px #FFEB3B, 263px 604px #FF5722, 1546px 692px #F44336;
		animation: animStar 80s linear infinite;
	}

	@keyframes animStar {
		0% {
			transform: translateY(0px);
		}

		100% {
			transform: translateY(-2000px);
		}
	}
</style>

链接: https://www.fly63.com/course/33_1597