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是否可以在另一个CSS规则中引用它?
例如,如果我具有以下HTML: <div class="someDiv"></div> 和这个CSS: .opacity { filter:alpha(opacity=60); -moz-opacity:0.6; -khtml-opacity: 0.6; opacity: 0.6; } .radius { border-top-left-radius: 15px; border-top-right-radius: 5px; -moz-border-radius-topleft: 10px; -moz-border-radius-topright: 10px; } .someDiv { background: #000; height: 50px; width: 200px; /*** How can I reference the opacity and radius classes here so this div has those generic rules …
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css