.article-content h1,
.article-content h2,
.article-content h3,
.article-content h4 {
    line-height: 1.3;
}
.article-content h1 {
    font-size: 36px;
}
.article-content h2 {
    font-size: 24px;
    margin-bottom: .7em;
}
.article-content h3 {
    font-size: 21px;
}
.article-content h4 {
    font-size: 18px;
}
.article-content h5 {
    font-size: 16px;
}
.article-content h6 {
    font-size: 12px;
    text-transform: uppercase;
}