.artist-link {
font-family: 'Oswald', sans-serif;
color: black;
font-size: 1.2em;
text-decoration: none;
}

<div class="artist-header" style="font-size: 3em;">
    {{ playlist.playlist_name }}
</div>
<div class="artist-header" style="font-size: 2em;">
    {{ playlist.text_field }}
</div>
<div class="artist-header" style="font-size: 1.5em;">
    {{ playlist.created_at_str }}
</div>