* {
    margin: 0;
    padding: 0;
}

a {
    text-decoration: none;
}

li {
    list-style: none;
}

/* 头部 */
.header_top {
    width: 1200px;
    height: 180px;
    margin: 0 auto;
    position: relative;
}

.header_top img:first-child {
    position: absolute;
    top: 30px;
    left: 0;
}

.header_top img:nth-child(2) {
    position: absolute;
    left: 0;
    top: 105px;
    height: 15%;
}

.header_top img:nth-child(3) {
    position: absolute;
    right: 0;
    top: 50px;
    width: 58%;
}

nav {
    width: 100%;
    height: 56px;
    background-color: #d7002e;
    padding: 8px 0;
}

nav .nav ul {
    width: 100%;
}

.nav {
    width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    line-height: 56px;

}

nav .nav ul li {
    text-align: center;
    position: relative;
    z-index: 1;
    min-width: 120px;
    float: left;
    font-size: 20px;
    transition: all .5s;
    padding: 0 0px;
}

nav .nav ul li:last-child {
    float: right;
}



nav .nav ul li:hover a.first-child {

    font-weight: bold;
    color: red;
    background-color: white;
}

.nav li dl {
    white-space: nowrap;
    text-align: center;
    background: red;
    display: none;

}

.nav li.on dl {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    display: block;
    box-sizing: border-box;
}

.nav ul li dl a {
    /* position: absolute; */
    left: 0px;
    width: 100%;
    height: 88px;
    font-size: 15px;
    margin-top: -4px;
    display: inline-block;
    width: 100%;
    height: 60px;
}

.color {
    background-color: white;
    color: red !important;
}

nav .nav ul li a {
    width: 100%;
    height: 58px;
    display: inline-block;
    color: #fff;
}

.nav_color {
    background-color: white;
    color: red !important;
}

.nav ul li dd {
    height: 50px !important;
}

.search {
    position: relative;
}

.search input {
    width: 200px;
    height: 30px;
    border-radius: 15px;
    outline: none;
    font-size: 14px;
    padding-left: 14px;
    padding-right: 40px;
    background-color: transparent;
    border: 1px solid #fff;
    color: #fff;
}

.search input::-webkit-input-placeholder {
    color: #fff;
}

.search a {
    position: absolute;
    top: 7px;
    right: -100px;
}