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CSS3如何实现弹跳的小球动画-创新互联
小编给大家分享一下CSS3如何实现弹跳的小球动画，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！
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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
2、CSS部分代码
#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
小球掉落依次排列动画
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);
}}
