摘要：
div { width: 100%; height: 100%; background-image: url(../images/bg.jpg); background-size: contain; background-repeat: no-repeat; background-position:
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posted @ 2020-04-27 17:48
ZhangZhihuiAAA
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div { width: 100vw; height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center;} 关于更多display: flex的内容可参见https:
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posted @ 2020-04-27 16:51
ZhangZhihuiAAA
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.section { clear: both; padding: 0; margin: 0;}.group:before,.group:after { content:""; display:table;}.col { display: block; float: left;}.span_3_of_
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posted @ 2020-04-27 15:39
ZhangZhihuiAAA
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