section{
    width: 100%;
    /* height: 100vh; */
    display: flex;
    /* flex-direction: column; */
    align-items: center;
    flex-direction:column ;
    /* z-index: 2; */
    margin-top: 150px;
}

#onea{
    display: block;
    padding: 30px 0;
    color: #fff;
}

section .zhengwen{
    width: 1202px;
}

.zhengwen span{
    display: block;
    color: #fff;
    padding: 0 10px;
    line-height: 35px;
    letter-spacing: 5px;
}
.zhengwen img{
    padding: 20px 10px;
    width: 100%;
}