.arr{background:url(img/arr.png) no-repeat;
    width: 20px;height: 12px;margin:0 2px 0 7px;
    display: inline-block;background-position: center;}
.on{
    font-size: 22px;
    border-bottom: 2px solid #B41414;}
.jszp i{width: 100%;
    height: 0px;
    background: url(img/shizi_img_hover.png) center;
    position: absolute;
    left: 2px;
    top: 2px;
    -webkit-transition: all 0.4s ease;
    transition: all 0.4s ease;}
    
  .jszp:hover i {
    height: 240px;}

.jszp {position: relative;}

.jszp p:hover {
    width: 180px;
    height: 40px;
    line-height: 40px;
    text-align: center;
    background: #bd1717;
    color: #ffffff;
    font-size: 17px;
    font-weight: 500;}