.bann {
    width: 1400px;
    position: relative;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    margin: auto;
    margin-top: 30px;
}

.bann-introduce {
    width: 100%;
    height: 380px;
    background-color: #fff;
    margin-top: 30px;
}

.bann-introduce h2 {
    text-align: center;
}

.bann-introduce img {
    float: left;
    margin-right: 30px;
}

.bann-introduce p {
    padding-top: 80px;
}

.bann-function {
    width: 100%;
    height: 600px;
    margin-top: 60px;
}

.bann-function h2 {
    margin-top: 100px;
    text-align: center;
}

.function-text {
    width: 600px;
    height: 100%;
    float: left;
}

.function-text h1 {
    text-align: center;
}

.function-text p {
    margin-left: 120px;
    padding-top: 50px;
}

.text-height {
    line-height: 600px;
}

.function-img {
    width: 800px;
    height: 100%;
    float: left;
    display: flex;
    justify-content: center;
    align-items: center;
}
.function-img img
{
    width: 800px;
}