.main-container{
    width:100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin-bottom: 3rem;
}
.main-nav{
    width: 100%;
    margin-bottom: 2rem;
}
.main-box{
    width: 1180px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    padding: 3rem 1rem 0 1rem;
    z-index: 2;
    background-color: #fff;
}
.biaoti{
    color: #5d5c5c;
    font-weight: 100;
}
.main-box h4{
    line-height: 2rem;
}
.main-box h6{
    color: #6b6b6b;
    line-height: 2rem;
}
.main-box p{
    color: #5d5c5c;
    line-height: 2rem;
}
.content-background{
    width: 80%;
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-top: 1.5rem;
}