background-image:url("./images/tifa2.PNG"); background-size:cover; background-position:70%0; 通常用在 background-image 大于 container 的情况, 但是, 当 background-image 小于 container 的时候. position 的功能就变成了定位. section{ margin-top:10rem; height:500px; width:100%; background-ima...
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