input, button {
    outline: none;
    border: none;
    background-color: transparent;
}
.navigation_down {
    top: 91px;
    z-index: 8888888;
    left: 50%;
    margin-left: -960px;
    position: absolute;
    width: 1920px;
}
.navigation_down > div {
    z-index: 99;
    left: 0;
    height: 257px;
    background-color: #fff;
    -webkit-box-shadow: 0px 4px 14px 0px rgba(0, 0, 0, 0.1);
    box-shadow: 0px 4px 14px 0px rgba(0, 0, 0, 0.1);
    position: relative;
    width: 1920px;
    top: 0;
    display: none;
}

.header_fixed {
    position: fixed;
    background-color: #fff;
    height: 80px;
    line-height: 80px;
    z-index: 9999;
    top: 0;
    -webkit-transition: all .5s ease;
    transition: all .5s ease;
}

.w1280 {
    width: 1280px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
    padding-bottom: 10px;
    border-bottom: 1px solid rgb(228,223,218);
    transition: all .3s;
}
.le {
    transition: all 0s ease .5s;
    width: 100%;
    margin: 0 auto;
}
.seInput {
    float: left;
    height: 40px;
    margin-top: 110px;
    background: none;
}
.seInput input {
    float: left;
    width: 1183px;
    height: 40px;
    font-size: 20px;
    margin-top: 0px;
    margin-left: 10px;
    font-weight: 400;
    background: none;
    border: none;
    color: #000;
}
.btn {
    float: right;
    width: 32px;
    height: 32px;
    background: url(../images/sea.png) no-repeat 0 0;
    margin-top: 110px;
    cursor: pointer;
    z-index: 9999999;
}