:root,
:root.light-mode {
    --about-article-title-color: #090909;
    --about-article-text-color: #191919;
    --about-article-background-color: #f6f6f6;
    --about-article-border-color: #6cb1ff;
    --about-article-shadow-color: #86bdfb;
}

:root.dark-mode {
    --about-article-title-color: #f6f6f6;
    --about-article-text-color: #efefef;
    --about-article-background-color: #202020;
    --about-article-border-color: #002f64;
    --about-article-shadow-color: #1f567b;
}

@media (prefers-color-scheme: dark) {
    :root:not(.light-mode) {
        --about-article-title-color: #f6f6f6;
        --about-article-text-color: #efefef;
        --about-article-background-color: #202020;
        --about-article-border-color: #002f64;
        --about-article-shadow-color: #1f567b;
    }
}

.main .center-box {
    display: flex;
    justify-content: center;
    width: 100%;
    margin: 0;
}

.main .article {
    box-sizing: border-box;
    margin: 0;
    padding: 20px;
    background-color: var(--about-article-background-color);
    border: 1px solid var(--about-article-border-color);
    color: var(--about-article-text-color);
    box-shadow: 0 0 2px var(--about-article-shadow-color);
}

.main .article h1 {
    text-align: center;
    font-size: 34px;
    margin: 10px;
    color: var(--about-article-title-color);
}

.main .article h2 {
    font-size: 25px;
    margin: 15px 0;
}

.main .article h3 {
    font-size: 21px;
    margin: 15px 0 10px;
    text-indent: 0.5em;
}

.main .article p {
    font-size: 19px;
    margin: 0;
    padding: 5px 0;
    line-height: 1.5em;
}

.main .article ol {
    list-style: decimal;
    margin: 0;
}

.main .article ul {
    list-style: square;
    margin: 0;
}

.main .article li {
    margin: 0;
    font-size: 19px;
    padding: 5px 0;
    line-height: 1.5em;
}