平时喜欢逛各大网站的专题版面，或者产品发布页面，因为可以看到很多炫酷的页面效果。这个案例的素材来自于百度浏览器的发布页面，以及下一个案例“变色龙动画”都是来自于百度浏览器，虽然我是谷歌浏览器的忠实用户，但是不得不说国内互联网行业知名品牌网站的专题页、产品发布页都是卯足了劲的让页面看起来很酷炫。
这个案例关键点在于小球弹跳的节奏感和布局定位。
一、案例知识点
1、相对和绝对定位
2、多个animation动画列队
二、主体代码
1、HTML代码
<div id="wrap">
<div class="tu1"><img src="images/1.png" /></div>
<div class="tu2"><img src="images/2.png" /></div>
<div class="tu3"><img src="images/3.png" /></div>
</div>
2、CSS部分代码
css;">
#wrap{
position:absolute;
left:0;
right:0;
top:0;
bottom:0;
width:580px;
height:143px;
margin:auto;
}
#wrap img{
width:160px;
}
#wrap div{
float:left;
margin-right:50px;}
#wrap div:last-child{
margin-right:0;}
.tu1,.tu2,.tu3{
position:absolute;
left:50%;
margin-left:-80px;
}
.tu1{
z-index:1;
animation:tiantiao1 0.5s ease-in 1 forwards,tiantiao2 0.2s ease-out 0.5s 1 forwards,tiantiao3 0.2s ease-in 0.7s 1 forwards,tiantiao4 0.15s ease-out 0.9s 1 forwards,tiantiao5 0.15s ease-in 1.05s 1 forwards,leftMove 0.4s ease-out 1.2s 1 forwards,rotate 1s linear 1.6s infinite;
}
.tu2{
z-index:2;
animation:tiantiao1 0.5s ease-in 1 forwards,tiantiao2 0.2s ease-out 0.5s 1 forwards,tiantiao3 0.2s ease-in 0.7s 1 forwards,tiantiao4 0.15s ease-out 0.9s 1 forwards,tiantiao5 0.15s ease-in 1.05s 1 forwards,middle 0.4s ease-out 1.2s 1 forwards;
}
.tu3{
z-index:3;
animation:tiantiao1 0.5s ease-in 1 forwards,tiantiao2 0.2s ease-out 0.5s 1 forwards,tiantiao3 0.2s ease-in 0.7s 1 forwards,tiantiao4 0.15s ease-out 0.9s 1 forwards,tiantiao5 0.15s ease-in 1.05s 1 forwards,rightMove 0.4s ease-out 1.2s 1 forwards;
}
@keyframes tiantiao1{
0%{
transform:translateY(-500px);
}
100%{
transform:translateY(0);}
}
@keyframes tiantiao2{
0%{
transform:translateY(0);}
100%{
transform:translateY(-100px);}}
@keyframes tiantiao3{
0%{
transform:translateY(-100px);}
100%{
transform:translateY(0);}}
@keyframes tiantiao4{
0%{
transform:translateY(0px);}
100%{
transform:translateY(-50px);}}
@keyframes tiantiao5{
0%{
transform:translateY(-50px);}
100%{
transform:translateY(0);}
}
@keyframes leftMove{
0%{
transform:translateX(0);}
100%{
transform:translateX(-300px) scale(1.6);
}}
@keyframes rightMove{
0%{
transform:translateX(0);}
100%{
transform:translateX(300px) scale(1.6);
}}
@keyframes middle{
0%{
transform:translateX(0);
}
100%{
transform:translateX(0) scale(1.6);
}}
多个队列的动画要注意动画的延迟。上一个队列的动画执行完毕后才执行下一个队列的动画。
完整页面代码
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>小球掉落依次排列动画</title> <style type="text/css"> body,div,footer,p{ margin:0; padding:0;} body{ font:1em "microsoft Yahei"; background-color:#eee;} #wrap{ position:absolute; left:0; right:0; top:0; bottom:0; width:580px; height:143px; margin:auto; } #wrap img{ width:160px; } #wrap div{ float:left; margin-right:50px;} #wrap div:last-child{ margin-right:0;} .tu1,.tu2,.tu3{ position:absolute; left:50%; margin-left:-80px; } .tu1{ z-index:1; animation:tiantiao1 0.5s ease-in 1 forwards,tiantiao2 0.2s ease-out 0.5s 1 forwards,tiantiao3 0.2s ease-in 0.7s 1 forwards,tiantiao4 0.15s ease-out 0.9s 1 forwards,tiantiao5 0.15s ease-in 1.05s 1 forwards,leftMove 0.4s ease-out 1.2s 1 forwards,rotate 1s linear 1.6s infinite; } .tu2{ z-index:2; animation:tiantiao1 0.5s ease-in 1 forwards,tiantiao2 0.2s ease-out 0.5s 1 forwards,tiantiao3 0.2s ease-in 0.7s 1 forwards,tiantiao4 0.15s ease-out 0.9s 1 forwards,tiantiao5 0.15s ease-in 1.05s 1 forwards,middle 0.4s ease-out 1.2s 1 forwards; } .tu3{ z-index:3; animation:tiantiao1 0.5s ease-in 1 forwards,tiantiao2 0.2s ease-out 0.5s 1 forwards,tiantiao3 0.2s ease-in 0.7s 1 forwards,tiantiao4 0.15s ease-out 0.9s 1 forwards,tiantiao5 0.15s ease-in 1.05s 1 forwards,rightMove 0.4s ease-out 1.2s 1 forwards;} footer{ position:absolute; bottom:20px; left:50%; margin-left:-104px; } footer p{ text-align:center; margin-bottom:.7em;} footer a{ color:#666; text-decoration:none;} footer a:hover{ color:#333;} @keyframes tiantiao1{ 0%{ transform:translateY(-500px); } 100%{ transform:translateY(0);} } @keyframes tiantiao2{ 0%{ transform:translateY(0);} 100%{ transform:translateY(-100px);}} @keyframes tiantiao3{ 0%{ transform:translateY(-100px);} 100%{ transform:translateY(0);}} @keyframes tiantiao4{ 0%{ transform:translateY(0px);} 100%{ transform:translateY(-50px);}} @keyframes tiantiao5{ 0%{ transform:translateY(-50px);} 100%{ transform:translateY(0);} } @keyframes leftMove{ 0%{ transform:translateX(0);} 100%{ transform:translateX(-300px) scale(1.6); }} @keyframes rightMove{ 0%{ transform:translateX(0);} 100%{ transform:translateX(300px) scale(1.6); }} @keyframes middle{ 0%{ transform:translateX(0); } 100%{ transform:translateX(0) scale(1.6); }} </style> </head> <body> <div id="wrap"> <div class="tu1"><img src="images/1.png" /></div> <div class="tu2"><img src="images/2.png" /></div> <div class="tu3"><img src="images/3.png" /></div> </div> <footer> <p></p> <p><a href="https://www.jb51.net" target="_blank">www.jb51.net</a></p> </footer> </body> </html>
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