#sNav {
    display: -webkit-box;
    height: 34px;
    margin: 10px;
    overflow: hidden;
    border: 1px solid #47b751;
    border-radius: 5px;
    background: #fff;
    text-align: center;
}

#sNav a {
    display: block;
    -webkit-box-flex: 1;
    line-height: 34px;
    color: #47b751;
    font-size: 14px;
    text-align: center;
}

#sNav a:not(:last-child) {
    border-right: 1px solid #47b751;
}

#sNav a.active {
    color: #fff;
    background: #47b751;
}

#sNav a:nth-of-type(2),
#sNav a:nth-of-type(3) {
    display: none;
}

.klist p {
    overflow: hidden;
    zoom: 1;
}

.klist p a {
    float: left;
    display: inline;
    width: 50%;
    height: 140px;
    margin: 5px 0 10px;
    overflow: hidden;
    text-align: center;
}

.klist p a img {
    display: block;
    width: 200px;
    height: 110px;
    margin: 0 auto 4px;
}

.klist p a b {
    font: 1em "Microsoft YaHei";
}

.d_icon {
    display: block;
    margin: 10px;
    line-height: 36px;
    color: #47b751;
    border: 1px solid #47b751;
    border-radius: 4px;
    text-align: center;
}

@media screen and (max-width: 320px) {
    .klist p a {
        width: 50%;
        height: 80px;
    }

    .klist p a img {
        width: 100px;
        height: 57px;
    }
}

@media screen and (min-width: 321px) and (max-width: 480px) {
    .klist p a {
        width: 50%;
        height: 100px;
    }

    .klist p a img {
        width: 140px;
        height: 77px;
    }
}

@media screen and (min-width: 481px) and (max-width: 640px) {
    .klist p a {
        width: 33.333%;
        height: 120px;
    }

    .klist p a img {
        width: 160px;
        height: 88px;
    }
}

@media screen and (min-width: 641px) and (max-width: 1150px) {
    .klist p a {
        width: 33.333%;
    }
}

@media screen and (min-width: 1151px) {
    .klist p a {
        width: 20%;
    }
}