CSS半透明背景，不透明文字

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p{ 100%; background:rgba(0,0,0,0.6) !important;filter:progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr='#99000000', EndColorStr='#99000000'); }
p a{color:#fff; position:relative; display:block; padding:3px 10px; overflow:hidden; border:0 none ;line-height:20px;}