<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>简单的火焰动画</title>
<style>
.back {
background: #141e30;
position: absolute;
left: 0;
top: 0;
width: 100%;
height: 100%;
}
.light {
width: 100%;
height: 100%;
animation: firelight 2s ease infinite;
background: radial-gradient(ellipse at bottom, rgba(255, 193, 7, 0.15) 0%, rgba(255, 193, 7, 0) 90%);
position: fixed;
z-index: 1;
bottom: 0;
left: 0;
bottom: 0;
}
@keyframes firelight {
0% {
opacity: 1;
}
50% {
opacity: 0.8;
}
100% {
opacity: 1;
}
}
.content {
position: absolute;
left: 50%;
bottom: 0;
margin: 0 0 -30px -100px;
width: 200px;
height: 200px;
overflow: hidden;
border-radius: 100%;
}
.content .fire {
filter: url(#goo);
position: absolute;
width: 100%;
height: 100%;
}
.content div.bottom {
position: absolute;
left: 50px;
bottom: 0;
width: 100px;
height: 30px;
background: #ff9800;
border-radius: 30px;
}
.content figure {
position: absolute;
margin: 0 0 -15px;
left: calc(50% - 70px);
bottom: 0;
width: 70px;
height: 70px;
background: #ff9800;
border-radius: 100%;
}
.content figure:nth-child(1) {
animation: firecircle 1.2s 0.14s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 9px;
margin-bottom: -30px;
}
.content figure:nth-child(2) {
animation: firecircle 1.2s 0.28s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 53px;
margin-bottom: -25px;
}
.content figure:nth-child(3) {
animation: firecircle 1.2s 0.42s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 53px;
margin-bottom: -36px;
}
.content figure:nth-child(4) {
animation: firecircle 1.2s 0.56s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 48px;
margin-bottom: -27px;
}
.content figure:nth-child(5) {
animation: firecircle 1.2s 0.7s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 63px;
margin-bottom: -16px;
}
.content figure:nth-child(6) {
animation: firecircle 1.2s 0.84s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 2px;
margin-bottom: -35px;
}
.content figure:nth-child(7) {
animation: firecircle 1.2s 0.98s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 16px;
margin-bottom: -22px;
}
.content figure:nth-child(8) {
animation: firecircle 1.2s 1.12s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 56px;
margin-bottom: -36px;
}
.content figure:nth-child(9) {
animation: firecircle 1.2s 1.26s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 30px;
margin-bottom: -37px;
}
.content figure:nth-child(10) {
animation: firecircle 1.2s 1.4s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 21px;
margin-bottom: -32px;
}
.content figure:nth-child(11) {
animation: firecircle 1.2s 1.54s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 36px;
margin-bottom: -25px;
}
.content figure:nth-child(12) {
animation: firecircle 1.2s 1.68s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 41px;
margin-bottom: -32px;
}
.content figure:nth-child(13) {
animation: firecircle 1.2s 1.82s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 13px;
margin-bottom: -40px;
}
.content figure:nth-child(14) {
animation: firecircle 1.2s 1.96s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 60px;
margin-bottom: -40px;
}
.content figure:nth-child(15) {
animation: firecircle 1.2s 2.1s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 69px;
margin-bottom: -34px;
}
.content figure:nth-child(16) {
animation: firecircle 1.2s 2.24s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 17px;
margin-bottom: -16px;
}
.content .reverse div {
position: absolute;
margin: 0 0 -15px;
left: 0;
bottom: 0;
width: 70px;
height: 70px;
background: #141e30;
border-radius: 100%;
}
.content .reverse div:nth-child(1) {
animation: firereverseleft 1.2s 0.5s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 22px;
margin-bottom: -22px;
}
.content .reverse div:nth-child(2) {
animation: firereverseleft 1.2s 1s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 18px;
margin-bottom: -35px;
}
.content .reverse div:nth-child(3) {
animation: firereverseleft 1.2s 1.5s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 10px;
margin-bottom: -29px;
}
.content .reverse div:nth-child(4) {
animation: firereverseleft 1.2s 2s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 3px;
margin-bottom: -36px;
}
.content .reverse div:nth-child(5) {
left: 120px;
animation: firereverseright 1.2s 0.5s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 3px;
margin-bottom: -34px;
}
.content .reverse div:nth-child(6) {
left: 120px;
animation: firereverseright 1.2s 1s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 2px;
margin-bottom: -40px;
}
.content .reverse div:nth-child(7) {
left: 120px;
animation: firereverseright 1.2s 1.5s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 15px;
margin-bottom: -37px;
}
.content .reverse div:nth-child(8) {
left: 120px;
animation: firereverseright 1.2s 2s cubic-bezier(0.5, 0.07, 0.64, 1) infinite;
margin-left: 8px;
margin-bottom: -29px;
}
@keyframes firecircle {
0% {
transform: translateY(0) scale(1);
background: #ff9800;
}
100% {
transform: translateY(-175px) scale(0);
background: #ffc107;
}
}
@keyframes firereverseleft {
0% {
transform: translateY(0) translateX(0) scale(0.3);
}
100% {
transform: translateY(-175px) translateX(50px) scale(1);
}
}
@keyframes firereverseright {
0% {
transform: translateY(0) translateX(0) scale(0.3);
}
100% {
transform: translateY(-175px) translateX(-50px) scale(1);
}
}
p {
color: white;
position: absolute;
left: 50%;
top: 40%;
transform: translate(-50%, -50%);
text-align: center;
font-size: 42px;
font-family: 'Cinzel', serif;
}
p span {
width: 100%;
font-size: 22px;
font-style: italic;
float: left;
margin: 30px 0 0;
letter-spacing: 1px;
color: #ffc107;
font-family: 'Open Sans Condensed', sans-serif;
}
p span:before {
content: '? ';
}
</style>
</head>
<body>
<div class="back"></div>
<div class="light"></div>
<div class="content">
<div class="fire">
<div class="bottom"></div>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
<figure></figure>
</div>
<div class="reverse">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</div>
<p>
It was a pleasure<br>to burn.
<span class="author">Ray Bradbury, Fahrenheit 451</span>
</p>
<svg xmlns="http://www.w3.org/2000/svg" version="1.1">
<defs>
<filter id="goo">
<feGaussianBlur in="SourceGraphic" stdDeviation="10" result="blur" />
<feColorMatrix in="blur" mode="matrix" values="1 0 0 0 0 0 1 0 0 0 0 0 1 0 0 0 0 0 18 -7" result="goo" />
<feBlend in="SourceGraphic" in2="goo" />
</filter>
</defs>
</svg>
</body>
</html>
