body {
    font-size: 18px;
}
.intro-header .heading-underlay {
    background-color: rgba(55,55,55,0.6);
}
.intro-header .site-heading,
.intro-header .post-heading,
.intro-header .page-heading {
    padding: 50px 0 25px;
}
.intro-header .site-heading h1,
.intro-header .page-heading h1 {
    margin-top: 0;
    font-size: 50px;
}
.intro-header .post-heading h1 {
    font-size: 40px;
}
@media only screen and (max-width: 768px) {
    body {
        font-size: 20px;
    }
    .intro-header .site-heading h1,
    .intro-header .page-heading h1 {
        font-size: 35px;
    }
    .intro-header .post-heading h1 {
        font-size: 25px;
    }
}