ds-site/Resources/Private/Sass/components/_codeHighlighting.scss

code {
    background: $black-dark;
    color: $white-dark;
    padding: {
        left: 0.5em;
        right: 0.5em;
    }
    white-space: nowrap;
}

pre code {
    display: block;
    overflow-x: auto;
    padding: 0.5em;
    white-space: pre;

    .tag {
        color: $white;

        .name {
            color: $blue;
        }
    }

    .attr {
        color: $blue;
    }

    .string {
        color: $white-dark;
    }

    .function {
        color: $white;
    }

    .keyword {
        color: $green;
    }

    .params {
        .string {
            color: $black;
        }
    }
}