Four Card Feature

Hey, this looks almost identical, great job 😎.

To clear that accessibility issue on report just wrap your whole content in a main tag.

If you prefer a more semantic html, one suggestion I can provide:

It's a best practice to put multiple heads [h1s, h2s, ...] inside a hgroup tag.

that being said:

<hgroup>
      <h1 class="line-one">
        Reliable, efficient delivery</h1>
      <h2 class="line-two">
        // Also this span seems superfluous
        // if `span` is used to indicate bold text, 
        // then `<b>...</b>` tag reads better in my opinion (or `strong` tag)
        <span>Powered by Technology</span>
      </h2>
</hgroup>

If you don't like hgroup simply do like so:

<h1 class="line-one">
        Reliable, efficient delivery
      <b class="line-two">
        Powered by Technology
      </b>
</h1>

I would personally go with the latter because I like having only one h1 on each page (article, post, ...). This will bring slightly better SEO results and helps robots to find content easier.

Hope these help, just for you to know you're doing great keep it up, cheers 😀