html,
body {
    padding: 0;
    margin: 0;
    font-family: "Microsoft YaHei";
}

body {
    overflow-x: hidden;
}

ul {
    list-style: none;
    padding: 0;
}

p {
    margin: 0;
    text-align: left;
    font-size: 16px;
    line-height: 26px;
}

a {
    text-decoration: none;
    color: rgb(0, 0, 238);
}

.clearfix::after {
    content: "";
    display: block;
    clear: both;
}

.layer {
    width: 1200px;
    margin: 0 auto;
}

.fl {
    float: left;
}

.fr {
    float: right;
}

.flex {
    display: flex;
}

.center {
    text-align: center;
}

.mp {
    margin-top: 20px;
}

.nav {
    position: absolute;
    top: 0;
    width: 100%;
    min-width: 750px;
    z-index: 1;
    display:flex;
    justify-content:space-between;
}

    .nav .nav-cont .nav-left {
        line-height: 70px;
    }

    .nav .nav-cont .nav-right {
        margin-top: 22px;
    }

    .nav img {
        vertical-align: middle;
    }

    .nav .nav-btn {
        height: 30px;
        width: 85px;
        font-size: 16px;
        border-radius: 25px;
        background-color: white;
        cursor: pointer;
        outline: none;
        border: none;
        color: #0073e0;
        text-align:left;
        padding-left:18px;
    }
    .nav .about-us {
        color: white;
        margin-right: 20px;
        font-size: 16px;
        border-bottom: 1px solid white;
    }


.master {
    width: 100%;
    position: relative;
}

    .master img {
        width: 100%;
    }

    .master .code {
        position: absolute;
        top: 0;
        left: 0;
    }
.master .code .content {
    display: flex;
    flex-direction: column;
    align-items:center;
    color: #fff;
    font-size: 19px;
}

.master .code div:nth-child(1) {
    padding-right: 60px;
}

.master .text {
    margin-top: 10px;
}

.master .code p {
    font-size:18px;
}

.master .code img {
    width: 150px;
    height: 150px;
}

.trait .warp {
    display: flex;
    flex-wrap: wrap;
}

    .trait .warp .warp-item {
        width: 50%;
        margin-top: 20px;
    }

        .trait .warp .warp-item .warp-left {
            width: 217px;
        }

        .trait .warp .warp-item .warp-right {
            flex: 1;
            text-align: left;
            margin-top: 70px;
            padding: 0 15px;
            font-size: 15px;
        }

            .trait .warp .warp-item .warp-right p {
                margin-top: 10px;
                color: #818181;
            }

h4 {
    margin: 5px 0;
    font-size: 21px;
    font-weight: inherit;
}

.process .warp {
    background-color: #f2f2f2;
}

    .process .warp .warp-left {
        padding: 83px 0 111px 77px;
    }

    .process .warp .warp-right {
        margin-top: 107px;
    }

        .process .warp .warp-right img {
            margin-top: 20px;
        }

footer {
    min-width: 1200px;
}

.slogan {
    height: 70px;
    font-size: 14px;
    color: #606350;
    display: flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
}