If you're using the BasePress Knowledgebase plugin and you want to style its typography to match with your brand then use the below CSS Snippets to achieve that.
.bpress-wrap h1 {
font-size: 1.6em;
color: #000000;
font-weight: 800;
text-transform: uppercase;
font-style: normal;
}
.bpress-wrap h2 {
font-size: 1.4em;
font-weight: 700;
color: #000000;
font-style: normal;
text-transform: uppercase;
}
.bpress-wrap h3 {
font-size: 1.3em;
font-weight: 700;
color: #000000;
font-style: normal;
text-transform: uppercase;
}
.bpress-wrap h4 {
font-size: 1.2em;
font-weight: 700;
color: #000000;
font-style: normal;
text-transform: uppercase;
}