main element with two sections and class 'two-columns' has a too high gap.

[jelmerveen]

example:

<main class="two-columns">
      <section><article>A</article></section>
      <section><article>B</article></section>
</main>

[jelmerveen]

using utility classes fixes this.

    <main class="two-columns">
      <section class="p-0"><article>A</article></section>
      <section class="p-0"><article>B</article></section>
    </main>