一、CSS3三角形不断放大特效

11.1 图片预览

11.2 index.html代码

11.3 style.css代码

html {	height: 100%;}body {	padding: 0;	margin: 0;	height: 100%;	background: #642B73;	/* fallback for old browsers */	/* Chrome 10-25, Safari 5.1-6 */	background: linear-gradient(to left, #C6426E, #642B73);	/* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */}.wrapper {	overflow: hidden;	position: absolute;	top: 0;	left: 0;	width: 100%;	height: 100%;}.triangle-canvas {	position: absolute;	left: 50%;	top: 50%;	width: 100%;	height: 100%;	-webkit-transform: translate(-50%, -50%);	transform: translate(-50%, -50%);}.triangle {	fill: none;	stroke: #fff;	stroke-width: 15;	-webkit-transform-origin: center center;	transform-origin: center center;	-webkit-animation: triangle-animation 10s linear infinite;	animation: triangle-animation 10s linear infinite;}.triangle-1 {	-webkit-animation-delay: 0s;	animation-delay: 0s;}.triangle-2 {	-webkit-animation-delay: -0.5s;	animation-delay: -0.5s;}.triangle-3 {	-webkit-animation-delay: -1s;	animation-delay: -1s;}.triangle-4 {	-webkit-animation-delay: -1.5s;	animation-delay: -1.5s;}.triangle-5 {	-webkit-animation-delay: -2s;	animation-delay: -2s;}.triangle-6 {	-webkit-animation-delay: -2.5s;	animation-delay: -2.5s;}.triangle-7 {	-webkit-animation-delay: -3s;	animation-delay: -3s;}.triangle-8 {	-webkit-animation-delay: -3.5s;	animation-delay: -3.5s;}.triangle-9 {	-webkit-animation-delay: -4s;	animation-delay: -4s;}.triangle-10 {	-webkit-animation-delay: -4.5s;	animation-delay: -4.5s;}.triangle-11 {	-webkit-animation-delay: -5s;	animation-delay: -5s;}.triangle-12 {	-webkit-animation-delay: -5.5s;	animation-delay: -5.5s;}.triangle-13 {	-webkit-animation-delay: -6s;	animation-delay: -6s;}.triangle-14 {	-webkit-animation-delay: -6.5s;	animation-delay: -6.5s;}.triangle-15 {	-webkit-animation-delay: -7s;	animation-delay: -7s;}.triangle-16 {	-webkit-animation-delay: -7.5s;	animation-delay: -7.5s;}.triangle-17 {	-webkit-animation-delay: -8s;	animation-delay: -8s;}.triangle-18 {	-webkit-animation-delay: -8.5s;	animation-delay: -8.5s;}.triangle-19 {	-webkit-animation-delay: -9s;	animation-delay: -9s;}.triangle-20 {	-webkit-animation-delay: -9.5s;	animation-delay: -9.5s;}@-webkit-keyframes triangle-animation {	0% {		-webkit-transform: scale(0) rotate(0deg);		transform: scale(0) rotate(0deg);		opacity: 1;	}	100% {		-webkit-transform: scale(3) rotate(45deg);		transform: scale(3) rotate(45deg);		opacity: 0;	}}@keyframes triangle-animation {	0% {		-webkit-transform: scale(0) rotate(0deg);		transform: scale(0) rotate(0deg);		opacity: 1;	}	100% {		-webkit-transform: scale(3) rotate(45deg);		transform: scale(3) rotate(45deg);		opacity: 0;	}}

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