article {
    margin-left: 15%;
    margin-right: 15%;

    img, iframe {
        display: block;
        margin-left: auto;
        margin-right: auto;

        margin-top: 10pt;
        margin-bottom: 10pt;
    }

    ul {
        margin-bottom: 10pt;
    }
}

h2,
h3,
h4 {
    color: #57b4ff;
    line-height: 1.25;
}

h2 {
    font-size: 24pt;
    margin: 2.5rem 0 1.5rem 0;
    border-bottom: 1px solid #57b4ff;
    width: 100%;
    display: block;
}

h3,
h4 {
    font-size: 18pt;
    margin-top: 1.5rem;
}

h4 {
    font-size: 12pt;
    margin-top: 0.5rem;
}

.input-group {
    margin-top: 10pt;
    margin-bottom: 20pt;
}