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HTML 

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

<link
rel="stylesheet"
href="https://use.fontawesome.com/releases/v5.8.1/css/all.css"
integrity="sha384-50oBUHEmvpQ+1lW4y57PTFmhCaXp0ML5d60M1M7uH2+nqUivzIebhndOJK28anvf"
crossorigin="anonymous"
/>
        
<header id="header">

  <div class="logo">
    <img
         id="header-img"
         src="https://i.imgur.com/Fk7mB91.png"
         alt="hair care logo"
         >
  </div> 

  <nav id="nav-bar">
    <ul>
      <li><a class="nav-link" href="#about">About</a></li>
      <li><a class="nav-link" href="#features">Features</a></li>
      <li><a class="nav-link" href="#how-it-works">How it works</a></li>
    </ul>
  </nav>
</header>

<article id="about" class="heading-container">

  <div class="heading-photo">
    <img 
         src="https://i.imgur.com/0k5PIhq.png" 
         alt="header illustration">
  </div>

  <div>
    <h1 id="heading">Embrace your <br> natural hair.</h1>
    <h3 id="description">Natural products made for you</h3>

    <form id="form" action="https://www.freecodecamp.com/email-submit">

      <input
             name="email"
             id="email"
             type="email"
             placeholder="Enter your email address"
             required
             >
      <input id="submit" type="submit" value="Get Started" class="button">
    </form>
  </div>

</article>

<article id="features">

  <h1 class="large-title">Our products are:</h1>

  <section class="grid-container">

    <div class="short-paragraph">
      <div class="icon"><i class="fas fa-heart fa-7x"></i></div>
      <h3 class="small-title">Cruelty free</h3>
      <p>Lorem ipsum dolor sit amet consectetur adipiscing elit. Class mauris nibh ultrices eget senectus cubilia turpis aliquam facilisis</p>
    </div>

    <div class="short-paragraph">
      <div class="icon"><i class="fab fa-envira fa-7x"></i></div>
      <h3 class="small-title">Silicone free</h3>
      <p>Lorem ipsum dolor sit amet consectetur adipiscing elit. Class mauris nibh ultrices eget senectus cubilia turpis aliquam facilisis</p>
    </div>

    <div class="short-paragraph">
      <div class="icon"><i class="fas fa-users fa-7x"></i></div>
      <h3 class="small-title">Tested by hundreds</h3>
      <p>Lorem ipsum dolor sit amet consectetur adipiscing elit. Class mauris nibh ultrices eget senectus cubilia turpis aliquam facilisis</p>
    </div>

  </section>

</article>

<article id="how-it-works">

  <div class="grid-container">
    <iframe 
            id="video"
            class="resp-container"
            width="560" 
            height="315" 
            src="https://www.youtube.com/embed/UG-CMivSZaU" 
            frameborder="0" 
            allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" 
            allowfullscreen></iframe>

    <div class="long-paragraph">
      <h1 class="large-title">Watch them work</h1>
      <p class="adjust">Habitant aptent nam sollicitudin vestibulum viverra nisi etiam iaculis vivamus, porttitor taciti facilisis ante tincidunt mattis malesuada penatibus posuere, lobortis sed mus feugiat id ridiculus ultricies integer.</p>
    </div>

  </div>
</article>

<footer>
  <h4>Made with ❤ by Maru</h4>
</footer>
!

CSS 

              
                /* Body font  */
@import url('https://fonts.googleapis.com/css2?family=Montserrat&display=swap');

/* Headings font */

@import url('https://fonts.googleapis.com/css2?family=Montserrat&family=Poppins:wght@700&display=swap');

body {
    font-family: 'Montserrat', sans-serif;
    line-height: 1.3;
    margin: 0;
    background-color: #FFF6BB;
    color: #473508;
}

/* Navigation Bar */

#nav-bar {
    color: white;
    text-align: right;
}

@media (max-width: 700px) {
    #nav-bar {
        text-align: center;
    }
}

li {
    display: inline;
    font-size: 14px;
    margin: 2em;
}

@media (max-width: 700px) {
    li {margin: 1em;}
}

a {
    text-decoration: none;
    font-family: inherit;
    color: inherit;
}


#header { /* Nav Bar Container */
    position: fixed;
    top: 0;
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: #473508;
    width: 100%;
    height: auto;
}


.logo > img {
    width: 100%;
    height: auto;
    max-width: 10vw;
    padding-top: 0.30em;
}

@media (max-width: 900px) {
    .logo > img {
        max-width: 15vw;
    }
}

/* About Section  */

#heading { /* Main Title */
    font-family: 'Poppins', sans-serif;
    color: #D86348;
    font-size: 3em;
    margin-bottom: 0.30em;
    
}
@media (max-width: 700px) { 
    #heading {margin-top: 1.5em;}
}

.heading-container { /* About Section Container */
    display: flex;
    justify-content: space-evenly;
    flex-direction: row-reverse;
    align-items: center;
    width: 100%;
    min-height: 100vh;
}

@media (max-width: 700px) {
    .heading-container {
        flex-direction: column-reverse;
        text-align: center;
    }
}

.heading-photo > img {
    width: 100%;
    height: auto;
    max-width: 35vw;
    margin-top: 2em;
} 

@media (max-width: 700px) { 
    .heading-photo > img {
        max-width: 40vw;
        margin: 0;
    }
}

/* Form */

input {
  font-family: inherit;
  font-size: inherit;
  padding: 0.60em;
  border: none;
  
}

.button {
    border: none;
    background-color: #EFA23C;
    color: inherit;
    border-radius: 2px;
    padding: 0.60em;
    font-weight: bold;
}

/* Features and How it works Sections */

.grid-container { /* Main Container */
    width: 100%;
    display: flex;
    justify-content: space-evenly;
    min-height: 65vh;
    margin-bottom: 1em;
}

@media (max-width: 700px) { /* This will adjust the features section*/
    .grid-container {
        flex-direction: column;
        align-items: center;
    }
}

#features { /* To adjust the jumping thing */
    padding-top: 1.5em;
}

.short-paragraph {
    max-width: 22vw;
    text-align: center;
}

@media (max-width: 700px) {
    .short-paragraph {
        max-width: 70vw;
        margin-bottom: 0.30em;
    }
}

.icon {
    color:  #776630;
}

.small-title {
    font-family: 'Poppins', sans-serif;
    color: #D86348;;
    font-size: 1.3em;
}

.large-title {
    font-family: 'Poppins', sans-serif;
    color: #D86348;
    font-size: 3em;
    text-align: center;
}

.long-paragraph {
    max-width: 45vw;
    text-align: center;
}

@media (max-width: 900px) {
    .long-paragraph {
        max-width: 80vw;
    }
}

@media (max-width: 900px) {
    #how-it-works .grid-container { /* This will adjust the how-it-works section*/
        flex-direction: column;
        align-items: center;
    }
}

/* Footer */

footer {
    color: white;
    background-color: #473508;
    text-align: center;
    height: auto;
    padding: 5px 0 5px 0;
    font-weight: lighter;
}

h4 {
    font-weight: lighter;
}
!

JS
!
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