* {
padding: 0;
margin: 0;
}
ul, ol {
list-style: none;
}
a {
text-decoration: none;
color: #000;
}
section {
height: 600px;
border-bottom: 1px solid #000;
position: relative;
}
.big {
/*利用定位调整树叶位置*/
position: absolute;
width: 240px;
height: 152px;
background: url(images/page.png);
left: 400px;
bottom: 150px;
}
.small {
position: absolute;
width: 89px;
height: 63px;
background: url(images/page.png) 0 -152px;
left: 250px;
top: 50px;
/*调用动画*/
-webkit-animation: leaf 10s linear 0s infinite;
}
/*定义动画*/
@-webkit-keyframes leaf {
0% {
/*在天上准备掉落*/
opacity: 0;
/*移动 旋转 每一个状态样式属性必须一一对应*/
/*一个元素可以有多个变形 用空格隔开*/
transform: rotate(0deg) translate(0,0);
}
30% {
/*掉落在空中*/
opacity: 1;
transform: rotate(5deg) translate(200px,180px);
}
60% {
/*掉落在地下*/
opacity: 0;
transform: rotate(10deg) translate(400px,360px);
}
100% {
/*利用60-100对应的时间模拟等待*/
opacity: 0;
transform: rotate(10deg) translate(400px,360px);
}
}
</style>
</head>
<body>
<section>
<div class="big"></div>
<div class="small"></div>
</section>
