.phone-nav {
    display: none;
}

.phone-nav {
    display: none;
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 98;
    color: white;
}

.phone-nav-content {
    display: none;
    position: fixed;
    top: 0px;
    left: 0px;
    width: 320px;
    height: 100%;
    background-color: #279767;
    padding: 20px;
    z-index: 99;
}

.header {
    position: fixed;
    top: 0px;
    left: 0px;
    width: 100%;
    background-color: #fff;
    box-sizing: border-box;
}

.header .header-main .header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header .header-main .header-nav .header-nav-btn {
    flex: 1;
    display: flex;
    align-items: center;
}

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

@media only screen and (min-width: 501px) {
    .occupy-box {
        width: 100%;
        height: 150px;
    }

    .header {
        height: 150px;
        border-bottom: 2px solid #D6D6D6;
    }

    .header .header-main {
        width: 1400px;
        margin: 0 auto;
    }

    .header .header-main .logo {
        margin-top: 10px;
        width: 150px;
    }

    .header .header-main .search-box {
        width: 1000px;
        margin: 10px auto;
    }

    .header .header-main .search-box .search-tip {
        width:420px;
        float: left;
        font-size: 30px;
        line-height: 40px;
        font-weight: 700;
        color: #565656;
        text-align: right;
    }

    .header .header-main .search-box .input-box {
        width:500px;
        float: right;
        position: relative;
    }

    .header .header-main .search-box .input-box .search-input {
        width: 100%;
        height: 40px;
        border: 1px solid #279767;
        border-radius: 15px;
        padding-left: 15px;
        box-sizing: border-box;
    }

    .header .header-main .search-box .input-box .search-icon {
        position: absolute;
        top: 50%;
        right: 10px;
        transform: translateY(-50%);
        font-size: 24px;
        color: #279767;
        cursor: pointer;
    }

    .header .header-main .btn-box {
        margin-top: 20px;
    }

    .header .header-main .btn-box a {
        margin-left: 0px;
        color: #999;
        font-size: 22px;
        line-height: 60px;
        text-align: center;
        padding: 15px;
    }

    .header .header-main .btn-box a:hover {
        color: #1c7430;
    }
}




@media only screen and (max-width: 500px) {
    .occupy-box{
        width: 100%;
        height:200px;
    }
    .header {
        padding-bottom: 20px;
        border-bottom: 2px solid #D6D6D6;
    }

    .header .header-main {
        position: relative;
        padding: 5px;
    }

    .header .header-main .logo {
        margin-top: 10px;
        width: 80px;
    }

    .header .header-main .search-box {
        width: 300px;
        margin: auto;
        text-align: center;
    }

    .header .header-main .search-box .search-tip {
        font-size: 30px;
        font-weight: 700;
        color: #565656;
        margin: 15px 0;
    }

    .header .header-main .search-box .input-box {
        position: relative;
        width: 90%;
        margin: 0 auto;
    }

    .header .header-main .search-box .input-box .search-input {
        width: 100%;
        height: 50px;
        border: 1px solid #279767;
        border-radius: 15px;
        padding-left: 15px;
        box-sizing: border-box;
    }

    .header .header-main .search-box .input-box .search-icon {
        position: absolute;
        top: 50%;
        right: 10px;
        transform: translateY(-50%);
        font-size: 24px;
        color: #279767;
    }

    .header .header-main .btn-box {
        margin-top: 20px;
    }

    .header .header-main .btn-box a {
        margin-right: 10px;
    }


    .open-nav-btn {
        display: flex;
        flex-direction: column;
        justify-content: space-evenly;
        align-items: center;
        width: 40px;
        height: 50px;
        padding: 5px;
    }

    .open-nav-btn .btn-bar {
        width: 100%;
        height: 2px;
        background-color: black;
        cursor: pointer
    }

    .phone-nav-content .nav-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        height: 120px;
        margin-bottom: 60px;
    }

    .phone-nav-content .nav-header .close-nav {
        width: 30px;
        height: 30px;
        font-size: 40px;
        color: white;
        line-height: 30px;
        text-align: center;
        cursor: pointer
    }

    .phone-nav-content .nav-main {
        padding-left: 0px;
        list-style: none;
    }

    .phone-nav-content .nav-main li {
        padding: 10px 0;
    }

    .phone-nav-content .nav-main .nav-item {
        display: block;
        color: white;
        font-size: 30px;
        line-height: 30px;
        text-decoration: none;
        /* text-align: center; */
    }

    .phone-nav-content .nav-line {
        height: 1px;
        background-color: #fff;
        margin: 30px 0;
    }

    .phone-nav-content .nav-button {
        width: 100%;
        border-radius: 50px;
        height: 50px;
        font-size: 22px;
        font-weight: bold;
        color: #279767;
        border: none;
        background-color: white;
    }
}