摘要：
CSS:.item_bg { background:#000; opacity: .75; /* 标准: firefox 1.5+, opera, safari,chrome */ -ms-filter: “alpha(opacity=75)”; /* ie 8 */ filter: alpha(opacity=75); /* ie7- */ -khtml-opacity: .75; /* safari 1.x */ -moz-opacity: .75; /* firefox 1.5-, netscape */}HTML: ... 阅读全文
