pre {
    line-height: 3;
    text-align: left;
    margin: 5% 32%;
    padding: 2% 2%;
    background-color: rgb(50 50 50 / 80%);
    border: solid 1px rgb(150 150 150 / 1);
    overflow: auto;
}

article {
    margin: 0 30%;
}

h4{
    font-family: 'SimHei';
}

#no{
    font-weight: lighter;
    font-size: 19px;
}