.rich-text-section .rich-text__heading {
    font-weight: bold;
    letter-spacing: 0;
    font-size: 1.8rem;
    line-height: 2rem;
    margin: 0 auto;
}

@media screen and (min-width: 768px) {
    .rich-text-section .rich-text__heading {
        font-size: 2.5rem;
        line-height: 3rem;
    } 
}