main {
    display: flex;
    justify-content: center;
}

#serious-contanier {
    font-family: 'JetBrains Mono', Arial, Helvetica, sans-serif;
    background-color: #fff;
    padding-inline: 20px;
    padding-block: 40px;

    width: 100vw;
    max-width: 1000px;
}

::selection {
    background-color: #000;
    color: #fff;
}

#serious-contanier > h1, #serious-contanier > h2, #serious-contanier > h3, #serious-contanier > h4, #serious-contanier > h5, #serious-contanier > h6 {
    margin: 15px 0;
}

#serious-contanier > h1 {
    font-size: 50px;
}
#serious-contanier > h2 {
    font-size: 35px;
}
#serious-contanier > h3 {
    font-size: 35px;
}
#serious-contanier > h4 {
    font-size: 30px;
}
#serious-contanier > h5 {
    font-size: 25px;
}
#serious-contanier > h6 {
    font-size: 20px;
}

#serious-contanier > p {
    white-space: pre-line;
}

#serious-contanier a {
    text-decoration: underline;
    color: #0000ff;
}
#serious-contanier a:hover {
    text-decoration: none;
}