深入理解CSS动画animation

01-animation也是一个复合属性，包括animation-name、animation-duration、animation-timing-function、animation-delay、animation-iteration-count、animation-direction、animation-play-state、animation-fill-mode共8个子属性

div{
     300px;
    height: 100px;
    background-color: pink;
    animation-name: test;
    animation-duration: 3s;
    animation-timing-function: ease;
    animation-delay: 0s;
    animation-iteration-count: infinite;
    animation-direction: normal;
    animation-play-state: running;
    animation-fill-mode: none;
}
/* 关于keyframes关键帧的内容稍后介绍     */
@keyframes test{
    0%{background-color: lightblue;}
    30%{background-color: lightgreen;}
    60%{background-color: lightgray;}
    100%{background-color: black;}
}

02-