* {
    margin: 0;
    padding: 0;
    text-decoration: none;
    list-style: none;
    transition: all 1s;
}

body {
    background-color: rgb(246, 246, 246);
}
/* .sti{
    display: none;
} */
.but2 {
    margin-top: 30px;
    /* display: none; */
}
/* 头部 */

nav {
    width: 100%;
    position: sticky;
    top: 0px;
    z-index: 5;
    background-color: rgb(246, 246, 246);
}

.nav_header {
    width: 1200px;
    height: 100px;
    margin: 0px auto;
    display: flex;
    align-items: center;
}

.nav_header>div:nth-child(1) {
/*    font-size: 50px;
    line-height: 100px;*/
    width: 200px;
    text-align: center;
    margin-left: 20px;
}
.logo {
    width: 100px;
    height: 100px;
    align-items: center;
}
.nav_header>.nav_input {
    width: 400px;
    display: flex;
}

.nav_header>.nav_input>input {
    width: 240px;
    height: 25px;
    border: 1px solid black;
    padding: 10px;
    padding-left: 20px;
    border-radius: 100px;
    border-top-right-radius: 0px;
    border-bottom-right-radius: 0px;
    border: none;
}

.nav_header>.nav_input span:nth-child(2) {
    width: 160px;
    padding: 10px;
    box-sizing: border-box;
    margin-left: 2px;
    background-color: #fff;
    font-size: 12px;
    display: flex;
    align-items: center;
    color: rgb(159, 143, 142);
    cursor: pointer;
    position: relative;
}

.nav_header>.nav_input span:nth-child(2)>div {
    width: 90%;
    position: absolute;
    top: 40px;
    background-color: #fff;
    display: none;
}

.nav_header>.nav_input span:nth-child(2)>div>ul>li {
    line-height: 30px;
    border-bottom: 1px solid #ccc;
    text-align: center;
}

.nav_header>.nav_input span:nth-child(2) img {
    width: 10px;
}

.nav_header>.nav_input span:nth-child(3) {
    width: 60px;
    margin-left: 2px;
    height: inherit;
    display: block;
    text-align: center;
    background-color: #fff;
    border-top-right-radius: 100px;
    border-bottom-right-radius: 100px;
    display: flex;
    align-items: center;
}

.nav_header>.nav_input span img {
    width: 20px;
    margin-left: 10px;
}

.nav {
    width: 1200px;
    height: 40px;
    background-color: rgb(29, 112, 186);
    margin: 0px auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav_icon {
    height: 25px;
    width: 25px;
    background-size: cover;
    background-image: url(../image/_购物.png);
    margin-right: 30px;
    position: relative;
}

.nav_icon span {
    position: absolute;
    top: -2px;
    right: -8px;
    font-size: 8px;
    background-color: red;
    color: white;
    padding: 2px 5px;
    border-radius: 10px;
}

.nav>ul {
    width: 80%;
    height: 40px;
    display: flex;
    justify-content: space-around;
    align-items: center;
}

.nav>ul>li:nth-child(2) {
    position: relative;
}

.nav>ul>li:nth-child(2)>ul {
    width: 800px;
    background-color: #fff;
    /* color: rgb(29, 112, 186); */
    position: absolute;
    top: 30px;
    /* height: 150px; */
    height: 0px;
    overflow: hidden;
    left: -6px;
}

.nav>ul>li:nth-child(2):hover ul {
    height: inherit;
}

.nav>ul>li:nth-child(2)>ul>li {
    float: left;
    box-sizing: border-box;
    padding: 5px 10px;
    line-height: 40px;
}

.nav>ul>li:nth-child(2)>ul>li>a {
    color: rgb(29, 112, 186);
}

.nav>ul>li:nth-child(2)>ul>li>div>span {
    color: red;
}

.nav>ul>li:last-child>a {
    color: white;
    margin-left: 20px;
}

.nav ul>li>a {
    color: white;
}


/* 底部 */

footer {
    width: 1200px;
    height: 240px;
    background-color: white;
    margin: 20px auto;
    display: flex;
    justify-content: space-around;
    text-align: center;
    align-items: center;
}

.s_tale {
    width: 100%;
    margin-top: 20px;
    display: flex;
    justify-content: space-between;
}

.s_tale>div {
    width: 50%;
    text-indent: 2rem;
    font-size: 18px;
    padding: 20px;
    box-sizing: border-box;
    display: flex;
}

.s_tale>div>img {
    width: 40%;
    margin-right: 10px;
}

.nav_header .nav_icon {
    display: none;
}

nav .nav_menu {
    display: none;
}

.huaguo:hover .zhankai {
    display: block;
    height: 100px !important;
}


/*  */

section {
    box-sizing: border-box;
    padding: 20px 0;
    box-sizing: border-box;
    width: 1200px;
    margin: 0 auto;
    /* display: flex; */
    /* justify-content: space-between; */
    overflow: hidden;
    background-color: #fff;
    padding-bottom: 0;
}

.title {
    color: rgb(29, 112, 186);
    margin-bottom: 30px;
}

.com {
    display: flex;
    justify-content: space-between;
    border-top: 5px solid rgb(29, 112, 186);
    border-left: 1px solid #999;
    border-right: 1px solid #999;
    border-bottom: 1px solid #999;
    box-sizing: border-box;
    padding: 20px;
}

.left {
    width: 50%;
    box-sizing: border-box;
    padding: 0 20px;
}

.c_t {
    color: rgb(29, 112, 186);
    padding-bottom: 20px;
}

.c_t_sm {
    padding-bottom: 10px;
    color: #999;
}

.c_t_sm span {
    color: red;
}

input {
    width: 100%;
    height: 35px;
}

.sti {
    display: block;
    color: red;
    font-size: 12px;
    padding-top: 5px;
}

.sti_div {
    height: 50px;
    /* background-color: pink; */
}

.chbox {
    width: 15px;
    height: 15px;
}

.d_s span {
    color: #999;
    font-size: 14px;
}

button {
    margin-top: 100px;
    color: #fff;
    background-color: rgb(29, 112, 186);
    border: none;
    width: 180px;
    height: 40px;
}

.right {
    width: 50%;
    box-sizing: border-box;
    padding: 0 20px;
}

.sti_div div {
    color: #999;
    font-size: 12px;
}
.gocar {
    cursor: pointer;
}