/* 头部 */
.header {
    width: 100%;
    background: #C92F36;
}

.header_top {
    width: 1200px;
    min-width: 1200px;
    height: 148px;
    margin: 0 auto;
}

.header_top .logo {
    float: left;
    padding-top: 32px;
}

.header_top .logo img {
    width: 451px;
    height: 87px;
}

.header_top .header_right .countdown {
    padding-top: 43px;
    float: right;
}

.header_top .header_right .countdown li {
    float: left;
    width: 77px;
    height: 74px;
    background: #9F1D1A;
    border-radius: 4px;
    margin: 0 5px;
    text-align: center;
    font-size: 18px;
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
}

.header_top .header_right .countdown li .num {
    font-size: 26px;
}

.header_top .header_right .countdown img {
    width: 77px;
    height: 73px;
}

nav {
    width: 1200px;
    height: 71px;
    line-height: 71px;
    margin: 0 auto;
}

nav ul li {
    float: left;
    display: inline-block;
    width: 12.5%;
    height: 71px;
    line-height: 71px;
    text-align: center;
    font-size: 20px;
    font-weight: 400;
}

nav ul li a {
    color: #2d2d2d;
    transition: all .5s;
}

nav ul li a:hover {
    color: #C8201D;
    border-bottom: 2px solid #C8201D;
    font-weight: 900;
}