.logo a::after {
    content: '';
    position: absolute;
    top: 50px;
    left: 215px;
    width: 56px;
    height: 26px;
    background: url(../images/sk.png);
}
.nav {
    height: 47px;
}
.nav_left {
    float: left;
}
.nav_left ul li {
    float: left;
    line-height: 47px;
}
.nav_left ul li a {
    display: block;
    padding: 0 30px;
    color: #000;
    font-size: 16px;
    font-weight: bold;
}
.nav_left ul li:hover a {
    color: #c81623;
}
.nav_right {
    float: right;
}
.nav_right ul li {
    float: left;
    line-height: 47px;
}
.nav_right ul li a {
    display: block;
    padding: 0 15px;
    font-size: 14px;
}
.nav_right ul li:last-child a::after {
    content: '\e91e';
    font-family: icomoon;
}
.sk_hd {
    text-align: center;
}
.sk_bd ul li {
    float: left;
    margin-right: 13px;
    overflow: hidden;
    width: 290px;
    height: 460px;
    border: 1px solid #fff;
}
.sk_bd ul li:nth-child(4n) {
    margin-right: 0;
}
.sk_bd ul li:hover {
    border: 1px solid #c81623;
}