.fwgn li {
    float: left;
    width: 25%;
    text-align: center;
    padding: 30px 0;
    margin: 20px 0;}

.pic-r {
    border: 1px dotted #8e2825;
    width: 50px;
    margin: 0 auto;
    height: 50px;
    border-radius: 5px;
    line-height: 45px;}
.pic-b {
    display: none;
    border: 1px dotted #ffffff;
    width: 50px;
    margin: 0 auto;
    height: 50px;
    border-radius: 5px;
    line-height: 45px;}
.fwgn li p {
    color: #8e2825;
    font-size: 16px;
    line-height: 35px;}
.fwgn li:hover{background-color: #8e2825;}
.fwgn li:hover .pic-r{display:none;}
.fwgn li:hover .pic-b{display:block;}
.fwgn li:hover p{  color: #fff;}