main {
    counter-reset: chapter 0;
    width: 94vw;
    margin-inline: auto;
    padding-bottom: 20vh;
}

main>hr {
    width: 94vw;
    margin: 3vw auto 5vw;
    height: 1px;
    background-color: #4990b8;
}

main>h1,
main>h2,
main>h3 {
    font-size: 1.5rem;
    margin-block: 10px;
    font-weight: bold;
    white-space: nowrap;
}

main>h1,
main>h2 {
    text-align: center;
}

main>h2+h3 {
    margin-top: 50px;
}

main>h3 {
    font-size: 1.3rem;
}

main>h3::before {
    counter-increment: chapter;
    content: counter(chapter, simp-chinese-informal)"、";
}

main>p,
main>ul li {
    font-size: 1.1rem;
    line-height: 35px;
    text-indent: 2em;
}

main>p.text-right {
    text-align: right;
}

main>ul {
    counter-reset: index 0;
    list-style: none;
}

main>ul li {
    counter-increment: listNum;
    list-style: inherit;
}

main>ul li::before {
    content: counter(listNum) ".";
}

main>table {
    font-size: 1.1rem;
    margin: auto;
    border: 1px solid #000;
}

main>table tr {
    height: 60px;
    line-height: 60px;
}

main>table tr>th:nth-child(1) {
    width: 20vw;
}

main>table tr>th:nth-child(2) {
    width: 40vw;
}

main>table th,
main>table td {
    text-align: center;
    border: 1px solid #000;
}

main>p button {
    width: 5em;
    height: 2em;
    background-color: #0892f1;
    color: white;
    font-size: 1.3em;
    border-radius: 10px;
}

@media screen and (max-width: 768px) {

    main>h1,
    main>h2,
    main>h3 {
        font-size: 1em;
        margin-block: 0;
        font-weight: bold;
    }

    main>h2+h3 {
        margin-top: 0px;
    }

    main>h3 {
        font-weight: bold;
        line-height: 10vw;
        margin-block: 0;
    }

    main>p,
    main>ul li {
        font-size: .8em;
        line-height: 5vw;
        text-indent: 2em;
    }

    main>table {
        width: 94%;
        font-size: 2vw;
    }

    main>table tr {
        height: 8vw;
        line-height: 8vw;
    }
}