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JavaScript

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HTML 

              
                <div class="mobile-container">
  <header>
    <section class="hero-banner">
      <div class="logo-wrapper">
        <img src="https://assets.codepen.io/6060109/2560px-Adidas_Logo+1.png" alt="Adidas logo.">
      </div>
      <div class="hero-image"></div>
    </section>
  </header>
  <main>
    <article class="text-info">
      <h2>We're</h2>
      <h2>Coming<br>Soon</h2>
      <p>Hello friends! We are currently building our new sports and comfort clothing store. Add your email address below to stay up-to-date with announcements and our launch proposals.</p>
      <section class="email-signup">
        <form>
          <input class="email-input" type="email" required placeholder="Email Address" name="email-address">
          <input class="email-submit" value="" type="submit" text="Go" for="email-address">
          <div id="submit-svg-container" class="email-submit">
            <svg id="email-submit-svg" width="12" height="20" viewBox="0 0 12 20" fill="none" xmlns="http://www.w3.org/2000/svg">
              <path id="Path" d="M1 1L9.83566 9.83566L1 18.6713" stroke="white" stroke-width="2"/>
            </svg>
          </div>
        </form>
      </section>
    </article>
  </main>
</div>
<div class="hero-image-desktop">
  <img src="https://assets.codepen.io/6060109/shoes.png" alt="Panted leg with white shoe runs through the rain.">
</div>
!

CSS 

              
                @font-face {
    font-family: 'AdiHaus';
    src: url('https://assets.codepen.io/6060109/adihaus_regular.ttf') format('truetype');
    font-weight: normal;
    font-style: normal;
}

@font-face {
    font-family: "AdiHaus";
    src: url("https://assets.codepen.io/6060109/adihaus_bold.ttf") format("truetype");
    font-weight: bold;
    font-style: normal;
}

*, *::before, *::after {
    box-sizing: border-box;
    border-style: none;
    list-style: none;
    margin: 0;
    padding: 0;
    text-decoration: none;
}
  
:root {
    --theme-color-black: #333333; /* rgba(51, 51, 51, 1) */
    --theme-color-brown: #423A3A; 
    --theme-color-red: #CD3A24;
    --theme-color-blue: #2F80ED;
    --theme-color-white: #FEFFFF; /* rgba(254, 255, 255, 1) */
}
  
/* ---------- MAIN BODY DECLERATIONS ---------- */

html, body {
    background-color: var(--theme-color-white);
    font-family: "AdiHaus";
    font-size: 14px;
    height: 100%;
    width: 100%;
}

input {
    font-family: 'AdiHaus';
}

.mobile-container {
    margin: 0 auto;
    max-width: 500px;
    min-width: 300px;
}

.hero-image-desktop {
    display: none;
}

/* ---------- HERO BANNER DECLERATIONS ---------- */
.hero-banner {
    align-items: center;
    display: flex;
    flex-direction: column;
}

.hero-banner .logo-wrapper {
    height: auto;
    margin: 0 auto;
    padding: 1rem 0;
    width: auto;
}
    
    .logo-wrapper img {
        display: block;
        height: 2.5rem;
        margin: 0 auto;
        width: auto;
    }

.hero-banner .hero-image {
    background-image: url(https://assets.codepen.io/6060109/mobile-shoes.jpg);
    background-size: cover;
    background-repeat: no-repeat;
    background-position: center;
    height: 376px;
    width: 100%;
}

/* ---------- TEXT INFO DECLERATIONS ---------- */
.text-info {
    align-items: center;
    display: flex;
    flex-direction: column;
    text-align: center;
    width: 100%;
}

    .text-info > * {
        padding: 0 2.5rem 1rem;
    }

    /* intended for the first h2 within .text-info */
    .text-info h2:nth-child(1) {
        color: var(--theme-color-blue);
        font-weight: normal;
        padding-top: 1.8rem;
        padding-bottom: 1rem;
    }

    .text-info h2 {
        font-size: 3.5rem;
        font-weight: bold;
        color: var(--theme-color-brown);
        letter-spacing: 5px;
        text-transform: uppercase;
    }

    .text-info p {
        color: var(--theme-color-black);
        line-height: 24px;
    }

    .text-info .email-signup {
        margin: 1rem 0 6rem;
        position: relative;
        width: 100%;
    }
    
        .email-signup .email-input {
            border: 1px solid rgba(51, 51, 51, .7);
            border-radius: 3px;
            padding: 1rem 1.5rem;
            opacity: .5;
            width: 100%;
        }

        .email-signup .email-input:focus {
            background-color: var(--theme-color-white);
            outline: 2px solid var(--theme-color-black);
            opacity: 1;
        }

        .email-signup .email-submit {
            background: linear-gradient(135deg, #7C7C7C 0%, #2B2828 100%);
            box-shadow: 0px 15px 20px rgba(66, 58, 58, 0.15);
            border-radius: 2px;
            color: var(--theme-color-white);
            cursor: pointer;
            display: inline-block;
            font-weight: bold;
            height: 3.55rem;
            opacity: 0;
            padding: 1rem 3rem;
            position: absolute;
            right: 0;
            margin-right: 2.5rem;
            z-index: 10;
        }

        .email-signup #submit-svg-container {
            display: inline;
            height: 3.25rem;
            opacity: 1;
            z-index: 5;
        }

        .email-signup #email-submit-svg {
            transform: translate(0%, -8%);
        }

@media only screen and (min-width: 768px) {
    body {
        background-image: url(https://assets.codepen.io/6060109/waves.png);
        background-position: center;
        background-repeat: no-repeat;
        background-size: cover;
        display: flex;
        flex-direction: row;
        height: 100%;
    }

    main {
        display: flex;
        flex-direction: column;
        height: inherit;
        max-width: 100%;
        margin: 0 auto;
    }

    .mobile-container {
        width: 55vw;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
    }

    .hero-banner .logo-wrapper {
        width: 100%;
        display: flex;
        align-items: start;
        flex-direction: column;
    }
        .logo-wrapper img {
            margin: 0 0 0;
            padding-left: 2.5rem;
        }

    .hero-image {
        display: none;
    }

    .text-info {
        text-align: left;
        align-items: start;
    }
    
        .text-info h2 {
            font-size: 4.5rem;
        }

        .text-info p {
            font-size: 16px;
        }

        .text-info input {
            font-size: 16px;
        }
  
        .text-info .email-signup {
            margin: 1rem 0 7rem;
        }

    .hero-image-desktop {
        display: block;
        height: 100%;
        width: 45vw;
    }

    .hero-image-desktop img {
        height: 100%;
        object-fit: cover;
        width: 100%;
    }
  
    /* Used for overiding certain css rules from its associated class */
    .email-signup #submit-svg-container {
      display: inline;
      height: 3.55rem;
      opacity: 1;
      z-index: 5;
    }

    /* The SVG is placed, whithin it container, behind the submit button on the z-index. The submit input itself has an opacity of zero so that the svg symbol can be seen from behind without interfering with its functionality. The 1px padding is used for recentering the svg because of it's container's 1px border-bottom.*/
    .email-signup #email-submit-svg {
      padding-top: 1px;
    }
  
    .email-signup #email-submit-svg {
        transform: translate(0%, 5%);
    }
}
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