[css] 举例说明css有哪些简写的属性和属性值？

border: solid 1px red;border-style: solid;
border-width: 1px;
border-color: red;animation: fadeIn .5s forward ease-in .2s infinite;animation-name: fadeIn;
animation-duration: 0.5s;
animation-fill-mode: forward;
animation-timing-function: ease-in;
animation-delay: 0.2s;
animation-iteration-count: infinite;background: url(images/foo.png) center top/cover no-repeat;background-image: url(images/foo.png);
background-position-x: center;
background-position-y: top;
background-size: cover;
background-repeat: no-repeat;

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