.head_top{
    background-color: #305bb3;
    box-shadow:0 2px rgba(0, 0, 0, 0.25) ;
}
.head_bottom{
    background-color: #4371cf;
}


/* 栏目背景 */
.channel .channel_title{
    background-image: url(./channelbg_right.png);
}
.channel .channel_title_left{
    background-image: url(./channelbg.png);
}