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HTML

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CSS

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <main>
  <h1>Person of Interest</h1>
  <div class="panel-wrapper">
    <h2>Sameen Shaw</h2>
    <p>Also known as Indigo Five Alpha, Dr. Sameen Shaw or simply Shaw, is a physician and a former operative for the U.S. Army Intelligence Support Activity. Prior to joining the team Shaw was part of an operation known as Catalyst Indigo, responsible for acting on relevant list intelligence delivered by the Machine, which she knew only as "Research". </p>
  </div>

  <div class="panel-wrapper">
    <h2>Samantha Groves</h2>
    <p>A highly intelligent computer hacker and former contract killer known by her hacker name "Root". She has a special relationship with The Machine and is the only one to be in frequent and direct contact, acting as The Machine's 'Analog Interface'. When the government begins to doubt The Machine's information, Root takes on both the relevant numbers and the task of bringing Samaritan down.</p>
  </div>
</main>
!

CSS 

              
                @import 'susy';
@import url(https://fonts.googleapis.com/css?family=Happy+Monkey|Lemon);
html {
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

body {
  font-family: "Happy Monkey";
  line-height: 1.5;
  font-size: 75%;
}

main {
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  background: silver;
  border: 2px solid black;
  padding: 0 1em;
  @media screen and (max-width: 599px) {
    display: contents;
  }
  &::after {
    clear: both;
    content: '';
    display: block;
  }
}

h1,
h2 {
  font-family: "Lemon";
}

.panel-wrapper {
  padding: 1em;
  border: 2px solid grey;
  margin-bottom: 1em;
  background: whitesmoke;
  @media screen and (min-width: 600px) {
    @include span(6 of 12);
    &:nth-child(2n) {
      @include last;
    }
  }
}
!

JS
!
999px

Console