.banner{
    width: 100%;
    height: 400px;
    background-image: url("../img/solution.png");
    background-size: cover;
    text-align: center;
    color: #fff;
    overflow: hidden;
}
.banner h2{
    margin-top: 160px;
    font-size: 32px;
    margin-bottom: 40px;
}
.banner p{
    margin-top: 10px;
    font-size: 20px;
}
.title{
    text-align: center;
    font-size: 30px;
    font-weight: 400;
}
.part1 {
    overflow: hidden;
}
.part1 h2{
    margin-top: 60px;
}
.p1{
    display: flex;
    justify-content: space-between;
}
.p1-img{
    display: flex;
    justify-content: center;
    margin-top: 30px;
}
.p1-img img{
    width: 1000px;
}
.p1-p{
    margin-top: 15px;
    font-size: 16px;
    text-align: center;
}
.part4 {
    overflow: hidden;
    width: 100%;
    height: 240px;
    background-color: #086f9a;
    margin-top: 50px;
}
.p4-list{
    width: 800px;
    margin: 40px auto;
    display: flex;
    justify-content: space-between;
}
.part4 h2 {
    color: #fff;
    margin-top: 40px;
}
.p4-list a{
    color: #fff;
    font-size: 16px;
    padding: 12px 20px;
    border: 1px solid #fff;
    border-radius: 8px;
}