背景CSS

.op_weather4_twoicon_day:hover .op_weather4_twoicon_hover {

background-image: -webkit-linear-gradient(top,rgba(255,255,255,.015),rgba(255,255,255,.15));

background-image: -o-linear-gradient(top,rgba(255,255,255,.015),rgba(255,255,255,.15));

background-image: -ms-linear-gradient(top,rgba(255,255,255,.015),rgba(255,255,255,.15));

background-image: -moz-linear-gradient(top,rgba(255,255,255,.015),rgba(255,255,255,.15));

filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,StartColorStr=#04FFFFFF,EndColorStr=#40FFFFFF);

}