/*header和banner图*/
.banner-img img {
    min-height: 200px;
}

.i-liitem > a {
    text-align: center;
}

.icon-bar {
    border-bottom: 1px solid #ffffff;
}

.i-banner {
    position: relative;
}

.banner-button > div {
    display: inline-block;
    height: 50px;
    line-height: 50px;
}

.banner-button > div > span {
    width: 30px;
    display: inline-block;
    border: 1px solid rgba(255, 255, 255, 0.51);
}

/*关于互牛*/
.about {
    width: 50%;
    margin: 0 auto;
}

.about-a {
    margin-top: 100px;
    margin-bottom: 50px;
    width: 100%;
    text-align: center;
}

.about-a > p {
    font-size: 36px;
    font-weight: 700;
}

.about-b p {
    font-size: 16px;
    color: #333;
    margin: 0 0 30px;
    line-height: 40px;
    text-indent:2em;
}

.about2 {
    width: 57%;
    margin: 100px auto 0 auto;
    font-size: 18px;
}

.icon-a img {
    float: left;
}

.icon-a span {
    padding-bottom: 100px;
    padding-left: 25px;
}

.span-a {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 100px;
}

/*企业文化*/
.contain {
    width: 100%;
    height: auto;
}

.culture {
    width: 50%;
    margin: 0 auto;
}

.culture-a {
    margin-top: 100px;
    width: 100%;
    text-align: center;
}

.culture-a p {
    font-size: 36px;
    font-weight: 700;
}

.bottom {
    height: 50%;
    width: 100%;
    background: #f6f6f6;
    float: bottom;
}

.line {
    width: 30%;
    height: 2px;
    background: #f0f0f0;
    margin-left: 35%;
}

/*媒体查询*/
@media screen and (max-width: 600px) {
    .about2 {
        width: 90%;
        font-size: 12px;
        margin: 40px auto 0 auto;
    }

    .about {
        width: 85%;
        margin: 0 auto;
    }

    .span-a {
        padding-bottom: 0px;
    }

    .about-b p {
        font-size: 12px;
    }

    .about-a > p {
        font-size: 20px;
    }

    .about-a {
        margin-top: 10px;
        margin-bottom: 5px;
    }

    .culture-a > p {
        font-size: 20px;
    }

    .culture-a {
        margin-top: 10px;
    }

    .culture {
        width: 90%;
        margin: 0 auto;
    }
}

@media screen and (max-width: 768px)and (min-width: 600px) {
    .about2 {
        font-size: 10px;
        margin: 60px auto 0 auto;
    }

    .span-a {
        padding-bottom: 10px;
    }

    .about-b p {
        font-size: 12px;
    }

    .about-a > p {
        font-size: 24px;
    }

    .about-a {
        margin-top: 20px;
        margin-bottom: 10px;
    }

    .culture-a > p {
        font-size: 24px;
    }

    .culture-a {
        margin-top: 20px;
    }
}

@media screen and (max-width: 1200px) and (min-width: 768px) {
    .about2 {
        font-size: 14px;
        margin: 80px auto 0 auto;
    }

    .span-a {
        padding-bottom: 20px;
    }

    .about-b p {
        font-size: 16px;
    }

    .about-a > p {
        font-size: 30px;
    }

    .about-a {
        margin-top: 50px;
        margin-bottom: 30px;
    }

    .culture-a > p {
        font-size: 30px;
    }

    .culture-a {
        margin-top: 50px;
    }
}

@media screen and (min-width: 1200px) {

}