.header {
    width: 100%;
    position: fixed;
    left: 0;
    top: 0;
    height: 56px;
    background: #fff;
    z-index: 9999;
    box-shadow: 0 2px 10px rgba(0,0,0,.05);
}
.center {
    width: 1440px;
    margin: 0 auto;
}
.center_logo {
    padding-top: 12px;
}
.center_logo img {
    width: 60px;
    height: 30px;
}
.center_menu {
    margin-left: 204px;
}
.center_menu ul li {
    line-height: 56px;
    height: 56px;
    padding: 0 20px;
}
.center_menu ul li a {
    font-size: 17px;
    color: #333;
}
.center_menu ul li input[type="text"] {
    width: 160px;
    height: 36px;
    border: none;
    padding: 8px 36px 8px 16px;
    box-sizing: border-box;
    border-radius: 18px;
    background: #f2f2f2 url("../img/search.png");
    background-repeat: no-repeat;
    background-size: 21px 21px;
    background-position: 124px center;
    transition: all ease 1s;
}
.center_menu ul li input[type="text"]:focus {
    width: 300px;
    background-position: 264px center;
}
.center_login {}
.center_login ul li:first-child img{
    padding-top: 17px;
    width: 24px;
    height: 24px;
    margin-right: 12px;
}
.center_login ul li:nth-child(2) img{
    padding-top: 18px;
    width: 56px;
    height: 24px;
    margin-right: 10px;
}

.center_login ul li:nth-child(3) a{
    padding: 0 16px;
    color: #969696;
}
.center_login ul li:nth-child(4) a{
    width: 82px;
    height: 40px;
    border-radius: 50px;
    background-color: #fff;
    font-size: 16px;
    color: #ec7259;
    margin-right: 8px;
    border: 1px solid #ec7259;
    text-align: center;
    line-height: 40px;
    display: block;
    box-sizing: border-box;
    margin-top: 7px;
}
.center_login ul li:nth-child(5) img {
    width: 16px;
    height: 16px;
    vertical-align: middle;
}
.center_login ul li:nth-child(5) a{
    width: 108px;
    height: 40px;
    border-radius: 50px;
    background-color: #ec7259;
    font-size: 16px;
    color: #fff;
    margin-right: 8px;
    text-align: center;
    line-height: 40px;
    display: block;
    margin-top: 7px;
}

.center_login ul li {
    height: 56px;
    line-height: 56px;
}

.center_login ul li,
.center_menu ul li {
    float: left;
}