鼠标悬停,图片变色

当鼠标放在图片上,图片变色




.bg{ background-image:url(submit-bg.png); width:100px; height:80px; }
.bg_hover{ background-image:url(submit-bg2.png); width:100px; height:80px; }
.bg_click{ background-image:url(submit-bg.png); width:100px; height:80px; }





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