00ff00}h3{background-color: transparent}p{background-color:rgb
嫦娥六号开启"月背"探秘之旅
css background-color 属性 transparent 值(透明,背景色,无背景色)
嫦娥六号开启"月背"探秘之旅
ie6及更早浏览器只有background-color接受transparent取值.
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