world/sass/base.scss

h1 {
    font-size: 3em;
}
h2 {
    font-size: 1.5em;
}
h3 {
    font-size: 1em;
}

hr {
    margin: 12px 0;
    background: linear-gradient(90deg, #FE0000 16.66%,
		#FD8C00 16.66%, 33.32%,
		#CEB600 33.32%, 49.98%,
		#119F0B 49.98%, 66.64%,
		#0644B3 66.64%, 83.3%,
		#B11DCB 83.3%);
    height: 1px;
    width: 100%;
    max-width: 300px;
    border: 0;
}

.md-content {
    h1 {
        font-size: 2.5em;
    }
    h2 {
        font-size: 2em;
    }
    h3 {
        font-size: 1.5em;
    }
}

.js-only {
    display: none;
}

a, a:visited {
    color: #00a8a8;
}

.title-a {
    color: #c1c4c1 !important;
    text-decoration: none !important;

    &:hover {
        text-decoration: underline !important;
    }
}

pre code {
	padding: 0.5em 1em;
	display: block;
}