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HTML 

              
                <script src="https://cdn.freecodecamp.org/testable-projects-fcc/v1/bundle.js"></script>

<header id="header">
  <img src="//cdn.kmp.link/img/tardis.png" alt="Tardis" id="header-img" />
  <h1>TARDIS Crafters</h1>

  <nav id="nav-bar">
    <ul>
      <li><a href="#features" class="nav-link">Features</a></li>
      <li><a href="#tour" class="nav-link">Take a Tour</a></li>
      <li><a href="#pricing" class="nav-link">Pricing</a></li>
    </ul>
  </nav>
</header>

<div class="container">
  <form method="post" action="https://www.freecodecamp.com/email-submit" id="form">
    <h3>Stay Up to Date</h3>
    <input type="email" id="email" name="email" placeholder="Enter your email address">
    <br/>
    <input type="submit" value="Get Started" id="submit" class="btn" />
  </form>

  <h2 id="features">Features</h2>
  <div id="features-box">
    <div class="row">
      <div class="features-img">
        <img src="//cdn.kmp.link/img/tardis.png" alt="Tardis"/>
      </div>
      <div class="features-desc">
        <h3>Bigger on the Inside</h3>
        <p>Always a surprise to guests and companions. It may look small, but the Time Lord Scientists have perfected the manipulation of space-folding to fit everything you would ever need inside.</p>
      </div>
    </div>
    <div class="row">
      <div class="features-img">
        <img src="//cdn.kmp.link/img/sonic-screwdriver.png" alt="Sonic Screwdriver"/>
      </div>
      <div class="features-desc">
        <h3>Customied Sonics!</h3>
        <p>Each TARDIS generates its own customized Sonic device, so your sonic screwdriver/trowel/blaster will match the look of your Console Room, and do just about everything*</p>
        <p><small><em>* Some Sonic devices may not work on wood</em></small></p>
      </div>
    </div>
    <div class="row">
      <div class="features-img">
        <img src="//cdn.kmp.link/img/key-security.png" alt="TARDIS Key"/>
      </div>
      <div class="features-desc">
        <h3>Never Lose Your Keys Again</h3>
        <p>Each TARDIS comes with backup keys in convenient locations, so you will never have to worry about losing your keys again.</p>
      </div>
    </div>
  </div>

  <h2 id="tour">Take a Tour</h2>
  <div id="video-box" class="mx-auto">
    <div data-video="5kjMCJ-7a3k" data-startseconds="0" data-endseconds="165" data-height="360" data-width="640" id="video">
    </div>
  </div>

  <h2 id="pricing">Pricing</h2>
  <div id="pricing-boxes">
    <div class="pricing-box">
      <h3>Type 40</h3>
      <p><del>$2000</del> <strong><em>$100</em></strong></p>
      <p>Great starter model</p>
      <p>Navigation is as-is</p>
        <p>Chameleon Circuit is stuck</p>
      <button class="btn">Select</button>
    </div>
    <div class="pricing-box">
      <h3>Type 50</h3>
      <p><strong>$2000</strong></p>
      <p>Easily cross dimensions</p>
      <p>Seating for 500</p>
      <p>Pool is piranha-free</p>
      <button class="btn">Select</button>
    </div>
    <div class="pricing-box">
      <h3>Type 87-A</h3>
      <p><strong>$6000</strong></p>
      <p>Voice-activated Navigation</p>
      <p>Sonic Screwdriver Maintenance</p>
      <p>Increased memory banks for your favorite consoles!</p>
      <button class="btn">Select</button>
    </div>
  </div>

  <footer>
    <nav>
      <ul>
        <li><a href="#">Privacy</a><li>
        <li><a href="#">Terms</a></li>
        <li><a href="#">Contact</a></li>
      </ul>
    </nav>
    <br/>
    <p>&copy; TARDIS Crafters</p>
  </footer>
</div>
!

CSS 

              
                body
  margin-top: 90px
  background-color: #eee

header
  position: fixed
  top: 0
  width: 100%
  background-color: rgba(51,102,204,.25)
  height: 70px
  padding: 10px
  padding-left: 50px
  padding-right: 50px
  h1
    float: left
    line-height: 50px
    font-family: 'Audiowide', cursive
  img
    height: 50px
    float: left

.container h2
  text-indent: -1000px

header nav
  float: right
  height: 70px
  display: inline-block
  margin: 0
  padding: 0
  ul
    list-style: none
    margin: 0
    padding: 0
    li
      float: left
      width: 160px
      text-align: center
      line-height: 40px
      a
        color: #000
        display: block
        &:hover
          text-decoration: none

form
  text-align: center
  input[type='email']
    width: 30%
  input[type='submit']
    width: 200px
    margin: 20px

.btn
  background-color: #fc0
  font-weight: 900
  text-transform: uppercase
  padding: 7px
  cursor: pointer

#video-box
  width: 640px
    
#features-box
  .row
    width: 80%
    min-width: 900px
    margin: 40px auto
    .features-img
      float: left
      height: 80px
      width: 10%
      line-height: 80px
      font-size: 40pt
      text-align: center
      img
        max-width: 100%
    .features-desc
      width: 90%
      padding-left: 20px
      
footer
  background-color: #ccc
  padding: 10px
  margin-top: 30px
  text-align: right
  overflow: auto
  nav
    width: 240px
  nav, p
    float: right
    display: block
    ul
      list-style: none
      margin: 0
      padding: 0
      li
        width: 80px
        float: left
        a
          text-decoration: none
          display: block
          text-align: center
          color: #000
          &:hover
            text-decoration: none
    
  
#pricing-boxes
  overflow: auto
  display: flex
  justify-content: space-around
  .pricing-box
    width: 300px
    text-align: center
    border: 1px #000 solid
    border-radius: 5px
    background-color: #fff
    h3
      padding: 10px
      background-color: #dedede
      font-size: 1.5em
    button
      margin-bottom: 10px
    strong
      font-size: 150%
      
@media screen and (max-width: 900px)
  header h1
    font-size: 125%
    width: 150px
    line-height: 25px
    nav ul li
      width: 125px
  #pricing-boxes
    display: block
    width: 100%
    .pricing-box
      margin: auto
      margin-bottom: 20px
!

JS 

              
                function onYouTubeIframeAPIReady() {
        var ctrlq = document.getElementById("video");
        var player = new YT.Player('video', {
          height: ctrlq.dataset.height,
          width: ctrlq.dataset.width,
          events: {
            'onReady': function(e) {
              e.target.cueVideoById({ 
                videoId: ctrlq.dataset.video,
                startSeconds: ctrlq.dataset.startseconds,
                endSeconds: ctrlq.dataset.endseconds
              });
            }
          } 
        }); 
      }
!
999px

Console