body {
    box-sizing: border-box;
    background-color: white;
    width: 100%;
    overflow-x: hidden;
}

.tab_box {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    box-sizing: border-box;
    padding: 10px 4%;
}

.tab_logo img {
    margin-bottom: 12px;
    display: block;
    height: 110px;
}

.tab_gt {
    display: flex;
    align-items: center;
    justify-content: flex-start;
}

.tab_gt a {
    font-size: 18px;
    box-sizing: border-box;
    padding: 0 15px;
}

.tab_gt a span {
    color: #323232;
    font-weight: 600;
    font-size: 30px;
}

.tab_drawer{
    display: none;
}

/* 联系我们 */
.contact_bg {
    background: url('../img/bg2.jpg') no-repeat center center;
    background-size: 100% 100%;
    box-sizing: border-box;
    padding: 80px 0;
}

.contact_box {
    background-color: white;
    width: 75%;
    margin: 0 auto;
    box-sizing: border-box;
    padding: 100px 150px;
    border-radius: 50px;
}

.contact_title {
    font-size: 36px;
    font-weight: bold;
}

.contact_title_small{
    font-weight: normal;
}

.contact_tip {
    font-size: 22px;
    box-sizing: border-box;
    padding: 16px 0 20px;
}

.contact_tip span {
    font-weight: bold;
}

/* copyright */
.copyright_box {
    background-color: #323232;
    box-sizing: border-box;
    padding: 60px 8%;
}

.copyright_logo {
    display: block;
    height: 100px;
}

.copyright_logo img {
    display: block;
    height: 100px;
}

.copyright_bottom {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    margin-top: 30px;
    font-size: 15px;
}

.copyright_bottom span {
    color: #A0A0A3;
}

.copyright_bottom a {
    margin-left: 40px;
}

.fixed_bg {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 997;
    visibility: hidden;
}

.fixed_bg.on {
    visibility: visible;
}

.fixed_drawer {
    position: fixed;
    width: 100%;
    top: 0;
    bottom: 0;
    right: -100%;
    background-color: white;
    z-index: 998;
    transition: all 0.3s;
}

.fixed_drawer.on {
    right: 0;
}

.fixed_close{
    display: block;
    width: 30px;
    margin: 20px;
}

.drawer_list {
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 10px;
    box-sizing: border-box;
    padding: 15px 5px;
}

.drawer_nav {
    flex: 1;
    padding: 5% 0;
    text-align: center;
    font-size: 50px;
    font-weight: bold;
}

.drawer_nav span {
    color: #323232;
}