html,
body {
    width: 100%;
    height: 100%;
}

#mynav {
    position: absolute;
    top: 0;
    left: 0;
    z-index: 999;
}

.seciton_one {
    background: url('../images/integration_bg.png');
    background-size: 100% 100%;
    width: 100%;
    height: 680px;
    display: flex;
    display: -webkit-flex;
    flex-direction: column;
    justify-content: center;
}

.seciton_one > h2 {
    font-size: 50px;
    font-family: MicrosoftYaHei-Bold;
    color: rgba(255, 255, 255, 1);
    text-shadow: 0px 4px 1px rgba(0, 0, 0, 0.35);
    text-align: center;
}

.seciton_one > h3 {
    margin-top: 50px;
    font-size: 24px;
    font-family: MicrosoftYaHei;
    font-weight: 400;
    color: rgba(255, 255, 255, 1);
    text-shadow: 0px 2px 5px rgba(0, 0, 0, 0.68);
    text-align: center;
}

.seciton_one ~ section > h4 {
    font-size: 30px;
    font-family: MicrosoftYaHei-Bold;
    color: rgba(51, 51, 51, 1);
    margin: 100px auto 50px;
    text-align: center;
}

.section_two > ul {
    width: 1200px;
    height: 310px;
    margin: 0 auto 50px;
}

.section_two > ul > li {
    width: 216px;
    height: 160px;
    border-radius: 2px;
    box-shadow: 0 3px 18px 0 rgba(0, 0, 0, 0.2);
    margin-left: 30px;
    float: left;
}

.section_two > ul > li.noleft {
    margin-left: 0
}

.section_two > ul > li > div {
    height: 120px;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 20px;
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
    color: rgba(51, 51, 51, 1);
}

.section_two > ul > li > div > img {
    max-width: 90%;
    max-height: 100%;
}

.section_two > ul > li > p:last-child {
    height: 40px;
    background: rgba(200, 0, 0, 1);
    border-radius: 0px 0px 2px 2px;
    font-size: 16px;
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
    color: rgba(255, 255, 255, 1);
    line-height: 40px;
    text-align: center;
}

.section_two > ul > li:nth-child(5) ~ li {
    margin-top: 30px;
    height: 120px;
}

.section_three > ul,
.section_four > ul {
    width: 1200px;
    height: 430px;
    margin: 50px auto;
}

.section_three > ul > li,
.section_four > ul > li {
    width: 336px;
    height: 430px;
    box-shadow: 0 3px 18px 0 rgba(0, 0, 0, 0.2);
    float: left;
    display: -webkit-flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    padding: 20px;
    box-sizing: border-box;
}

.section_three > ul > li:first-child ~ li {
    margin-left: 96px;
}

.section_three > ul > li > p:nth-child(2),
.section_four > ul > li > p:nth-child(2) {

    font-size: 24px;
    font-family: MicrosoftYaHei-Bold;
    font-weight: bold;
    color: rgba(51, 51, 51, 1);
    line-height: 60px;
}

.section_three > ul > li > p:last-child,
.section_four > ul > li > p:last-child {
    font-size: 16px;
    font-family: MicrosoftYaHei;
    font-weight: 400;
    color: rgba(102, 102, 102, 1);
    line-height: 32px;
    height: 192px;
}

.section_four > ul {
    height: 400px;
}

.section_four > ul > li {
    width: 270px;
    height: 400px;
}

.section_four > ul > li:first-child ~ li {
    margin-left: 40px;
}

.section_five > div {
    width: 1200px;
    text-align: center;
    margin: 50px auto;
}

.section_five > div > img {
    width: 90%;
}

@media screen and (max-width: 1366px) {
    .seciton_one {
        height: 480px;
    }

    .seciton_one ~ section > p {
        margin-top: 50px;
        font-size: 24px;
    }

    .section_two > ul,
    .section_three > ul,
    .section_four > ul,
    .section_five > div {
        width: 960px;
    }

    .section_two > ul > li {
        width: 180px;
        margin-left: 15px;
    }

    .section_three > ul {
        height: 360px;
    }

    .section_three > ul > li {
        width: 310px;
        height: 360px;
    }

    .section_three > ul > li:first-child ~ li {
        margin-left: 15px;
    }

    .section_four > ul {
        height: 340px;
    }

    .section_four > ul > li {
        width: 220px;
        height: 340px;
        padding: 10px;
    }

    .section_four > ul > li:first-child ~ li {
        margin-left: 26px;
    }

    .section_three > ul > li > p:last-child,
    .section_four > ul > li > p:last-child {
        line-height: 24px;
        height: 140px;
        font-size: 14px;
    }

    .section_three > ul > li > p:nth-child(2),
    .section_four > ul > li > p:nth-child(2) {
        font-size: 18px;
    }

    .section_three > ul > li > p:first-child > img,
    .section_four > ul > li > p:first-child > img {
        width: 70px;
    }
}