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HTML 

              
                    <header id="header">
        <img id="header-img" src="https://www.shareicon.net/download/2017/04/14/883959_science_512x512.png" alt="logo"><h1>Coder Agent</h1>
        <nav id="nav-bar">
            <ul>
                <li><a class="nav-link" href="#product-features">Features</a></li>
                <li><a class="nav-link" href="#product-video">Watch it in action!</a></li>
                <li><a class="nav-link" href="#product-prices">Prices</a></li>
            </ul>
        </nav>
    </header>
    <main>
        <section class="email-subscription">
            <h2>An AI agent that works for you and assists you during development</h2>
            <form id="form" action="https://www.freecodecamp.com/email-submit">
                <input id="email" type="email" name="email" placeholder="Enter your email address" required />
                <input id="submit" class="btn" type="submit" value="Know more about the product" />
            </form>
        </section>
        <section id="product-features">
            <h2>What the coder agents can do for you...</h2>
            <ul>
                <li>Assist you while coding (acting as another dev on pair programming)</li>
                <li>Execute manual tests as they were automatic (they should be well defined)</li>
                <li>Help you estimate task difficulty and cost</li>
                <li>Find bugs that only happen at runtime</li>
                <li>Generate HTML templates and styles using an image (wireframe, drawn mockup) as reference</li>
                <li>Lint any programming language</li>
                <li>Suggest refactors for performance improvement</li>
                <li>Suggest refactors for development velocity improvement</li>
                <li>Generate deployment scripts based on simple instructions</li>
                <li>Much more...</li>
            </ul>
        </section>
        <section id="product-video">
            <h2>Watch our agents in action!</h2>
            <iframe id="video" width="560" height="315" src="https://www.youtube.com/embed/y3RIHnK0_NE" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
        </section>
        <section id="product-prices">
            <h2>Pricing</h2>
            <div class="cards-container">
                <div class="price-card">
                    <h3 class="price-card__title">Wall-E</h3>
                    <div class="price-card__price">$89.99 / month</div>
                    <div class="price-card__features">
                        <ul>
                            <li>Single-user license</li>
                            <li>9000 minutes of usage</li>
                            <li>$0.05/minute after monthly limit</li>
                            <li>Pair programming & Linting features</li>
                            <li>Task estimation features</li>
                            <li>Performance improvement features</li>
                            <li>Scripts generation features</li>
                            <li>Bug finding features</li>
                        </ul>
                    </div>
                    <button class="btn price-card__cta">Select</button>
                </div>
                <div class="price-card">
                    <h3 class="price-card__title">Bender</h3>
                    <div class="price-card__price">$859.99 / month</div>
                    <div class="price-card__features">
                        <ul>
                            <li>Single-user license</li>
                            <li>43k minutes of usage</li>
                            <li>$0.10/minute after monthly limit</li>
                            <li>All the features from Wall-E package plus...</li>
                            <li>Manual testing features</li>
                            <li>Template generation features</li>
                            <li>Development velocity improvement features</li>
                        </ul>
                    </div>
                    <button class="btn price-card__cta">Select</button>
                </div>
                <div class="price-card">
                    <h3 class="price-card__title">Skynet</h3>
                    <div class="price-card__price">$11k / month</div>
                    <div class="price-card__features">
                        <ul>
                            <li>Unlimited users license</li>
                            <li>Unlimited usage time</li>
                            <li>All the features from Wall-E & Bender packages plus...</li>
                            <li>API generation features</li>
                            <li>Database generation features</li>
                            <li>Auto TDD features</li>
                            <li>Bug auto-fixing features</li>
                            <li>Component generation features</li>
                            <li>Learning by monitoring features</li>
                        </u>
                    </div>
                    <button class="btn price-card__cta">Select</button>
                </div>
                
            </div>
            
        </section>
    </main>
    <footer>
        Copyright 2019, AI Trainers Inc
    </footer>
!

CSS 

              
                * {
    box-sizing: border-box;
}

body {
    font-family: sans-serif;
    background-color: #E0E5B1;
    padding: 0 24px;
    color: #333749;
}

header {
    width: 100%;
    position: fixed;
    top: 0px;
    left: 0px;
    color: #EBECDF;
    background-color: #333749;
    max-height: 120px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    padding: 0px 24px;
}

header img {
    width: 48px;
    height: 48px;
}

header h1 {
    margin-left: 10px;
    margin-right: auto;
}

header nav {
    width: 320px;
    margin-left: auto;
    margin-right: 0;
}

header nav ul {
    display: flex;
    list-style: none;
    justify-content: space-between;
    width: 100%;
    padding: 0;
}

a.nav-link, a.nav-link:visited {
    color: #EBECDF;
}

a.nav-link:hover {
    color: #769B92;
}

@media (min-width: 640px) {
    header {
        flex-wrap: nowrap;
    }
}


main {
    max-width: 1200px;
    display: flex;
    flex-direction: column;
    margin: 120px auto;
}

section {
    display: flex;
    flex-direction: column;
    align-items: center;
    border-radius: 4px;
    padding: 11px 24px 48px;
    margin: 11px;
    background-color: #EBECDF;
}

section ul {
    list-style: none;
    text-align: center;
    padding: 0;
}

section ul li {
    margin-bottom: 15px;
}

form {
    display: flex;
    flex-direction: column;
}

input[type="email"] {
    padding: 11px;
    font-family: monospace;
    font-size: 16px;
    margin-bottom: 15px;
    border: 1px solid #769B92;
    border-radius: 4px;
    color: #769B92;
}

.btn {
    padding: 11px;
    color: #EBECDF;
    font-weight: bold;
    font-size: 18px;
    border: 1px solid #769B92;
    background-color: #769B92;
    border-radius: 4px;
    transition: all 0.1s ease;
}

.btn:hover, .btn:active {
    border: 1px solid #769B92;
    background-color: #EBECDF;
    color: #769B92;
}

footer {
    position: fixed;
    width: 100%;
    padding-bottom: 24px;
    padding-right: 24px;
    left: 0px;
    bottom: 0px;
    text-align: right;
}

.cards-container {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: space-between;
}

@media (min-width: 990px) {
    .cards-container {
        flex-direction: row;
    }
}

.price-card {
    display: flex;
    flex-direction: column;
    min-width: 300px;
    max-width: 30%;
    min-height: 600px;
    border-radius: 4px;
    border: 1px solid #769B92;
    padding: 16px 0;
}

.price-card .price-card__title {
    text-align: center;
}

.price-card .price-card__price {
    text-align: center;
    font-size: 22px;
    width: 100%;
    background-color: #769B92;
    color: #EBECDF;
    padding: 11px;
}

.price-card .price-card__features {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.price-card__cta {
    margin: auto;
    margin-bottom: 0;
    width: 80%;
}
!

JS
!
999px

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