用CSS3描绘出动起来的自行车，大家可以学习下。
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<title>纯CSS3实现自行车动画DEMO演示</title>
<style>
* {
padding: 0;
margin: 0;
}
html , body {
width: 100%;
height: 100%;
position: fixed;
top: 50%;
left: 0%;
}
html {
background-color:#000;
}
#animation {
width:450px;
margin:auto;
}
.bike {
position:relative;
}
.front.wheel {
margin-left: 140px;
}
.back.wheel {
margin-left: -120px;
}
.wheel {
width: 144px;
height: 144px;
margin-top: 50px;
border-radius: 150px;
position: absolute;
top: calc(50% - 75px);
left: calc(50% - 75px);
border: 3px solid #ff6f6a;
overflow: hidden;
border-radius: 150px;
animation: wheelSpin 1.6s linear 0s infinite reverse none;
-webkit-animation: wheelSpin 1.6s linear 0s infinite reverse none;
}
.wheel .hub {
background-color: rgba(115,118,121,1);
border: 2px dotted rgba(235,238,241,0.5);
width: 10px;
height: 10px;
border-radius: 150px;
position: absolute;
top: calc(50% - 7px);
left: calc(50% - 7px);
z-index: 12;
}
.wheel .gear {
background-color: rgba(75,78,81,1);
border: 3px dotted rgba(255,250,250,1);
border-radius: 150px;
position: absolute;
top: calc(50% - 13px);
left: calc(50% - 13px);
width: 20px;
height: 20px;
z-index: -1;
}
.wheel .rim {
position: absolute;
width: calc( 100% - 4px );
height: calc( 100% - 4px );
border: 2px solid rgba(255,111,106,0.9);
border-radius: 150px;
z-index: 12;
}
.wheel .rim .air {
position: absolute;
background-color: rgba(18,22,26,1);
left: 50%;
width: 2px;
height: 6px;
border-radius: 5px;
z-index: 14;
margin-left: -8px;
}
.back.wheel .rim .air {
bottom: 0;
}
.wheel .spokes div {
position: absolute;
width: 0px;
height: 144px;
border-left: 1px solid rgba(255,111,106,0.5);
margin-left: calc( 50% - 1px );
}
.wheel .spokes div:nth-of-type(1){
-webkit-transform: rotate(22.5deg);
transform: rotate(22.5deg);
}
.wheel .spokes div:nth-of-type(2){
-webkit-transform: rotate(45deg);
transform: rotate(45deg);
}
.wheel .spokes div:nth-of-type(3){
-webkit-transform: rotate(67.5deg);
transform: rotate(67.5deg);
}
.wheel .spokes div:nth-of-type(4){
-webkit-transform: rotate(90deg);
transform: rotate(90deg);
}
.wheel .spokes div:nth-of-type(5){
-webkit-transform: rotate(112.5deg);
transform: rotate(112.5deg);
}
.wheel .spokes div:nth-of-type(6){
-webkit-transform: rotate(135deg);
transform: rotate(135deg);
}
.wheel .spokes div:nth-of-type(7){
-webkit-transform: rotate(157.5deg);
transform: rotate(157.5deg);
}
.wheel .spokes div:nth-of-type(8){
-webkit-transform: rotate(180deg);
transform: rotate(180deg);
}
@keyframes wheelSpin {
100% { -webkit-transform: rotate(-360deg); -moz-transform: rotate(-360deg); -ms-transform: rotate(-360deg); -o-transform: rotate(-360deg); transform: rotate(-360deg);}
0% { -webkit-transform: rotate(0deg); -moz-transform: rotate(0deg); -ms-transform: rotate(0deg); -o-transform: rotate(0deg); transform: rotate(0deg);}
}
@-webkit-keyframes wheelSpin {
100% {
-webkit-transform: rotate(0deg); -moz-transform: rotate(0deg);
-ms-transform: rotate(0deg);
-o-transform: rotate(0deg); transform: rotate(0deg);}
0% { -webkit-transform: rotate(360deg); -moz-transform: rotate(360deg);
-ms-transform: rotate(360deg);
-o-transform: rotate(360deg); transform: rotate(360deg);}
}
@keyframes audioLines {
100% { width: 0px;}
81% { width: 0px;}
78% { width: 15px;}
75% { width: 0;}
72% { width: 15px;}
69% { width: 0px;}
0% { width: 0px;}
}
@-webkit-keyframes audioLines {
100% { width: 0px;}
81% { width: 0px;}
78% { width: 15px;}
75% { width: 0;}
72% { width: 15px;}
69% { width: 0px;}
0% { width: 0px;}
}
@keyframes audioMove {
100% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
81% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
78% { -webkit-transform: translate(2px , 0px); -moz-transform: translate(2px , 0px); -ms-transform: translate(2px , 0px); -o-transform: translate(2px , 0px); transform: translate(2px , 0px);}
75% { -webkit-transform: translate(-2px , 0px) rotate( -10deg ); -moz-transform: translate(-2px , 0px) rotate( -10deg ); -ms-transform: translate(-2px , 0px) rotate( -10deg ); -o-transform: translate(-2px , 0px) rotate( -10deg ); transform: translate(-2px , 0px) rotate( -10deg );}
72% { -webkit-transform: translate(2px , 0px) rotate( 10deg ); -moz-transform: translate(2px , 0px) rotate( 10deg ); -ms-transform: translate(2px , 0px) rotate( 10deg ); -o-transform: translate(2px , 0px) rotate( 10deg ); transform: translate(2px , 0px) rotate( 10deg );}
69% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
0% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
}
@-webkit-keyframes audioMove {
100% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
81% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
78% { -webkit-transform: translate(2px , 0px); -moz-transform: translate(2px , 0px); -ms-transform: translate(2px , 0px); -o-transform: translate(2px , 0px); transform: translate(2px , 0px);}
75% { -webkit-transform: translate(-2px , 0px) rotate( -10deg ); -moz-transform: translate(-2px , 0px) rotate( -10deg ); -ms-transform: translate(-2px , 0px) rotate( -10deg ); -o-transform: translate(-2px , 0px) rotate( -10deg ); transform: translate(-2px , 0px) rotate( -10deg );}
72% { -webkit-transform: translate(2px , 0px) rotate( 10deg ); -moz-transform: translate(2px , 0px) rotate( 10deg ); -ms-transform: translate(2px , 0px) rotate( 10deg ); -o-transform: translate(2px , 0px) rotate( 10deg ); transform: translate(2px , 0px) rotate( 10deg );}
69% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
0% { -webkit-transform: translate(0px , 0px); -moz-transform: translate(0px , 0px); -ms-transform: translate(0px , 0px); -o-transform: translate(0px , 0px); transform: translate(0px , 0px);}
}
.frame div {
position: absolute;
background-color: rgba(255,111,106,1);
border-radius: 8px;
top: 50%;
right: 50%;
width: 4px;
margin-right: 4px;
}
.frame div.small {
width: 4px;
margin-right: 2px;
}
.frame div:nth-of-type(1){
height: 148px;
margin-top: -85px;
margin-right: 30px;
-webkit-transform: rotate(-20deg);
-moz-transform: rotate(-20deg);
-ms-transform: rotate(-20deg);
-o-transform: rotate(-20deg);
transform: rotate(-20deg);
}
.frame div:nth-of-type(2){
height: 118px;
margin-top: -4px;
margin-right: 62px;
-webkit-transform: rotate(-86deg);
-moz-transform: rotate(-86deg);
-ms-transform: rotate(-86deg);
-o-transform: rotate(-86deg);
transform: rotate(-86deg);
}
.frame div:nth-of-type(3){
height: 146px;
margin-top: -64px;
margin-right: -46px;
-webkit-transform: rotate(45deg);
-moz-transform: rotate(45deg);
-ms-transform: rotate(45deg);
-o-transform: rotate(45deg);
transform: rotate(45deg);
}
.frame div:nth-of-type(4){
height: 120px;
margin-top: -55px;
margin-right: 80px;
-webkit-transform: rotate(40deg);
-moz-transform: rotate(40deg);
-ms-transform: rotate(40deg);
-o-transform: rotate(40deg);
transform: rotate(40deg);
}
.frame div:nth-of-type(5){
height: 135px;
margin-top: -113px;
margin-right: -28px;
-webkit-transform: rotate(-94deg);
-moz-transform: rotate(-94deg);
-ms-transform: rotate(-94deg);
-o-transform: rotate(-94deg);
transform: rotate(-94deg);
}
.frame div:nth-of-type(6){
height:168px;
margin-top: -108px;
margin-right: -107px;
-webkit-transform: rotate(-25deg);
-moz-transform: rotate(-25deg);
-ms-transform: rotate(-25deg);
-o-transform: rotate(-25deg);
transform: rotate(-25deg);
}
.seat {
position:relative;
display:block;
top:10px;
}
.seat .support {
position: absolute;
top: 50%;
left:125px;
margin-left: 31px;
margin-top: -133px;
width: 5px;
height: 84px;
border-radius:32px;
background-color: rgba(255,111,106,1);
-webkit-transform: rotate(90deg);
-moz-transform: rotate(14deg);
-ms-transform: rotate(14deg);
-o-transform: rotate(14deg);
transform: rotate(14deg);
}
.seat .saddle {
width: 0;
height: 0;
border-left: 50px solid transparent;
border-right: 30px solid transparent;
border-top: 18px solid rgba(255,111,106,1);
border-top-right-radius: 32px;
border-bottom-right-radius: 32px;
border-top-left-radius: 32px;
position: absolute;
top: 50%;
left: 125px;
margin-left: -5px;
margin-top: -92px;
}
.seat .saddle:before {
content:".";
position: absolute;
color: rgba(0,0,0,0);
width: 18px;
height: 18px;
margin-left:-25px;
border-top-left-radius: 45px;
border-bottom-left-radius: 25px;
border-bottom-right-radius: 45px;
border-bottom: 2px solid rgba(255,111,106,1);
border-left: 2px solid rgba(255,111,106,1);
margin-top: -15px;
-webkit-transform: rotate(15deg);
-moz-transform: rotate(15deg);
-ms-transform: rotate(15deg);
-o-transform: rotate(15deg);
transform: rotate(15deg);
}
.pedals {
position: absolute;
z-index: 101;
top: 50%;
right: 50%;
margin-top: 60px;
margin-right: 6px;
animation: wheelSpin 2.2s linear 0s infinite reverse none;
-webkit-animation: wheelSpin 2.2s linear 0s infinite reverse none;
}
.pedals .gear {
border: 3px solid rgba(255,111,106,1);
border-radius: 150px;
position: absolute;
top: calc(50% - 22px);
left: calc(50% - 22px);
width: 38px;
height: 38px;
z-index: 1;
overflow: hidden;
}
.pedals .gear .hub {
background-color: rgba(255,111,106,1);
width: 16px;
height: 16px;
border-radius: 20px;
position: absolute;
top: calc(50% - 8px);
left: calc(50% - 8px);
z-index:2;
}
.pedals .gear .struts {
position: absolute;
width: 100%;
height: 100%;
-webkit-transform: rotate(60deg);
-moz-transform: rotate(60deg);
-ms-transform: rotate(60deg);
-o-transform: rotate(60deg);
transform: rotate(60deg);
}
.pedals .pedal {
background-color: rgba(255,111,106,1);
border-radius: 10px;
position: absolute;
top: calc(50% - 3px);
left: calc(50% - 3px);
width: 3px;
height: 35px;
z-index: 5;
}
.pedals .pedal .footpad {
width: 16px;
height: 5px;
border-radius: 4px;
position: absolute;
z-index: 200;
margin-left: -6px;
margin-top: 31px;
background-color: rgba(255,111,106,1);
animation: wheelSpin 2.2s linear 0s infinite normal none;
-webkit-animation: wheelSpin 2.2s linear 0s infinite normal none;
}
.pedals .pedal.back {
z-index: -1;
margin-top: -35px;
-webkit-transform: rotate(180deg);
-moz-transform: rotate(180deg);
-ms-transform: rotate(180deg);
-o-transform: rotate(180deg);
transform: rotate(180deg);
}
.handlebars {
z-index: 10;
position:relative;
display:block;
top:10px;
}
.handlebars .handle {
position: absolute;
border-left: 5px solid rgba(255,111,106,1);
border-top: 5px solid rgba(255,111,106,1);
border-bottom: 5px solid rgba(255,111,106,1);
border-top-left-radius: 45px;
border-bottom-left-radius: 45px;
right: 50%;
width: 50px;
height: 20px;
margin-right: -121px;
margin-top: -121px;
-webkit-transform: rotate(-15deg);
}
.handlebars .handle:after {
content:"";
position: absolute;
width: 7px;
height: 0;
display:block;
margin-left:36px;
border: 5px solid rgba(255,111,106,1);
margin-top: -6px;
border-radius: 35%;
}
.handlebars .handle:before {
content:" ";
position: absolute;
background-color: rgba(58,62,67,1);
width: 35px;
height: 10px;
display:block;
margin-left:30px;
margin-top: 19px;
}
.handle-hub {
position: relative;
width: 7px;
height: 0;
left:-6px;
top:29px;
display:block;
margin-left:30px;
border: 5px solid rgba(255,111,106,1);
margin-top: -12px;
border-radius: 35%;
}
.chain {
border:2px solid rgba(255,111,106,1);
border-right:0;
border-top:0;
border-top-left-radius:40px;
border-bottom-left-radius:40px;
width:125px;
height:25px;
position:relative;
display:block;
top:58px;
left:90px;
-webkit-transform: rotate(8deg);
-moz-transform: rotate(8deg);
-ms-transform: rotate(8deg);
-o-transform: rotate(8deg);
transform: rotate(8deg);
}
.chain:before {
width:120px;
border-top:2px solid rgba(255,111,106,1);
content:" ";
dispaly:block;
position:absolute;
z-index:9999;
top:-8px;
left:6px;
-webkit-transform: rotate(-8deg);
-moz-transform: rotate(-8deg);
-ms-transform: rotate(-8deg);
-o-transform: rotate(-8deg);
transform: rotate(-8deg);
}
.basket {
border: 2px solid rgba(255,111,106,1);
width:55px;
height:60px;
display:block;
position:absolute;
top:-82px;
right:53px;
z-index:99999;
border-top-right-radius:20px;
border-top-left-radius:20px;
}
.basket:before {
border-left: 2px solid rgba(255,111,106,1);
width:55px;
height:62px;
content:" ";
display:block;
position:absolute;
top:-0px;
right:6px;
z-index:99999;
border-top-left-radius:22px;
-webkit-transform: rotate(4deg);
-moz-transform: rotate(3deg);
-ms-transform: rotate(3deg);
-o-transform: rotate(3deg);
transform: rotate(3deg);
}
.basket:after {
border-left: 2px solid rgba(255,111,106,1);
width:70px;
height:9px;
content:" ";
display:block;
position:absolute;
top:87px;
left:-55px;
z-index:99999;
-webkit-transform: rotate(113deg);
-moz-transform: rotate(113deg);
-ms-transform: rotate(113deg);
-o-transform: rotate(113deg);
transform: rotate(113deg);
}
.basket-wire {
border-top:1px solid rgba(255,111,106,1);
width:105px;
height:105px;
display:block;
position:absolute;
-webkit-transform: rotate(118deg);
-moz-transform: rotate(118deg);
-ms-transform: rotate(118deg);
-o-transform: rotate(118deg);
transform: rotate(118deg);
right:60px;
top:-55px;
border-top-left-radius:22px;
}
.basket-wire:after{
content:" ";
border-top:1px solid rgba(255,111,106,1);
width:115px;
height:105px;
display:block;
position:absolute;
right:0px;
top:-5px;
border-top-left-radius:30px;
z-index:9999;
}
.basket-screw {
border-left: 2px solid rgba(255,111,106,1);
width:4px;
height:4px;
display:block;
position:absolute;
top:56px;
left:-16px;
z-index:99999;
-webkit-transform: rotate(-113deg);
-moz-transform: rotate(113deg);
-ms-transform: rotate(113deg);
-o-transform: rotate(113deg);
transform: rotate(113deg);
}
.basket-screw:before {
border-left: 2px solid rgba(255,111,106,1);
width:10px;
height:13px;
content:" ";
display:block;
position:absolute;
top:0;
left:-8px;
z-index:99999;
}
</style>
</head>
<body>
<div id="animation">
<div class="bike">
<div class="basket"><div class="basket-screw"></div></div>
<div class="basket-wire"></div>
<div class="front wheel">
<div class="rim">
<div class="air"></div>
</div>
<div class="hub"></div>
<div class="spokes">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</div>
<div class="frame">
<div></div>
<div></div>
<div></div>
<div class="small"></div>
<div></div>
<div class="small"></div>
</div>
<div class="seat">
<div class="saddle"></div>
</div>
<div class="handlebars">
<div class="handle"><div class="handle-hub"></div></div>
</div>
<div class="pedals">
<div class="gear">
<div class="hub"></div>
<div class="struts">
</div>
</div>
<div class="front pedal">
<div class="footpad"></div>
</div>
<div class="back pedal">
<div class="footpad"></div>
</div>
</div>
<div class="back wheel">
<div class="rim">
<div class="air"></div>
</div>
<div class="hub"></div>
<div class="gear"></div>
<div class="spokes">
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
<div></div>
</div>
</div>
<div class="chain"></div>
</div>
</div>
</body></html>
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