Assistance needed for implementing a grid structure

  <main>
    <section class="features">
      <article class="feature--supervisor">
        <h2 class="feature--supervisor-heading">Supervisor</h2>
        <p class="feature--supervisor-description">Monitors activity to identify project roadblocks</p>
        <div class="feature--supervisor-div__icon">
          <img src="images/icon-supervisor.svg" alt="">
        </div>
      </article>
      <article class="feature--team">
        <h2 class="feature--team-heading">Team Builder</h2>
        <p class="feature--team-description">Scans our talent network to create the optimal team for your project</p>
        <div class="feature--team-div__icon">
          <img src="images/icon-team-builder.svg" alt="">
        </div>
      </article>
      <article class="feature--karma">
        <h2 class="feature--karma-heading">Karma</h2>
        <p class="feature--karma-description">Regularly evaluates our talent to ensure quality</p>
        <div class="feature--karma-div__icon">
          <img src="images/icon-karma.svg" alt="">
        </div>
      </article>
      <article class="feature--calculator">
        <h2 class="feature--calculator-heading">Calculator</h2>
        <p class="feature--calculator-description">Uses data from past projects to provide better delivery estimates
        </p>
        <div class="feature--calculator-div__icon">
          <img src="images/icon-calculator.svg" alt="">
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      </article>
    </section>
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