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CSS

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HTML 

              
                <body>
    <header class="main-header" id="top">
        <div class="brand-name">
            <a href="index.html">uHost</a>
        </div>
        <nav class="main-nav">
            <ul class="main-nav-items">
                <li class="main-nav-item"><a href="posts/index.html">Posts</a></li>
                <li class="main-nav-item"><a href="videos/index.html">Videos</a></li>
                <li class="main-nav-item"><a href="music/index.html">Music</a></li>
                <li class="main-nav-item"><a href="contact-us/index.html">Contact Us</a></li>
                <li class="main-nav-item"><a href="advertise/index.html">Advertise</a></li>
            </ul>
        </nav>
    </header>
    <div class="main-body">
        <p>
            <a href="#bottom">Scroll to bottom</a>
        </p>
        <p>
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Ea omnis assumenda esse minus excepturi non optio inventore beatae dolorem qui. Reiciendis neque ipsam velit necessitatibus nulla reprehenderit dolore temporibus veniam!
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Sapiente aliquid reiciendis earum accusantium! Omnis expedita nostrum eaque nulla voluptates sint quod provident accusantium pariatur corrupti. Veritatis impedit natus reiciendis dolores excepturi temporibus facere laborum quibusdam dolore enim velit nobis blanditiis fugiat, modi, sunt illum magnam ipsum. Quae quia delectus eveniet hic mollitia accusamus vel reprehenderit assumenda magnam laudantium facilis pariatur incidunt in praesentium id inventore harum magni obcaecati, expedita similique corporis! Quo fuga repellat commodi quas libero. Molestias at ipsam necessitatibus, mollitia debitis cum consectetur nobis ea quisquam voluptatem laboriosam vitae molestiae dolor impedit similique facere laudantium nisi ipsa suscipit.
            Lorem ipsum dolor sit amet consectetur adipisicing elit. Architecto est laudantium esse animi, rerum modi pariatur eos error facere minus voluptas voluptatum aperiam officiis cum quos porro laborum. Reprehenderit, architecto!
        </p>
        <h3><u>Next Section</u></h3>
        <p>
            Lorem ipsum dolor sit, amet consectetur adipisicing elit. Reiciendis deleniti suscipit necessitatibus tenetur iure quae optio perspiciatis sapiente quos, illo, inventore sequi obcaecati odit veritatis nulla sunt molestiae ad atque unde quibusdam aspernatur aliquid. Consequatur, nostrum maiores quas quos tenetur, doloremque perferendis numquam minus rerum placeat repudiandae sed eum voluptatem maxime? Corrupti facilis doloribus, nostrum accusamus error dicta deserunt, quae tempora autem libero tempore quis dolorum totam exercitationem quo? Hic aut perferendis amet a aliquid. Deserunt ipsam illo laboriosam alias accusamus omnis beatae neque quibusdam asperiores enim? Cum, veritatis illo. Voluptate suscipit cumque quod necessitatibus sunt commodi nihil error eos repudiandae animi sint tempore nostrum, labore, numquam obcaecati, cum id vero nam. Deserunt, aspernatur libero numquam harum quas dolores. Quisquam magnam possimus molestias consequatur ratione reprehenderit fuga! Beatae ratione itaque repellat sapiente autem saepe exercitationem deserunt, eum optio perferendis consequuntur ad. Iure dolore, molestiae, porro voluptatibus vel aliquam mollitia totam aspernatur, repellendus corrupti consectetur minima animi accusamus enim ratione doloremque consequuntur omnis quasi ex. Voluptatem quibusdam rem, tempore, dolorum distinctio ut et culpa perferendis, hic aliquam ad nemo! Facere, autem. Soluta rem optio sequi accusamus in dolor officia, quia tempore quae est neque numquam. Laboriosam maxime architecto laudantium aliquam fugiat placeat molestias consequuntur natus obcaecati quidem! Ducimus est temporibus alias inventore pariatur, fuga incidunt aliquid corrupti velit iusto vel numquam doloremque facere modi tempore. Sed aperiam maiores quidem exercitationem rerum nisi veniam aut cupiditate quod consectetur voluptas odit iure consequuntur unde, ipsum voluptatem illo corporis mollitia obcaecati voluptates tempore molestiae magnam. Fugit iusto, quam nisi laborum fugiat debitis eos adipisci asperiores, molestias quisquam id laudantium modi! 
        </p>
        <p>
            pAccusantium itaque dolorum cum ea quo debitis reprehenderit minus quia placeat eligendi expedita tempore sequi quibusdam sapiente obcaecati sed, in nihil nam iure. Voluptatum quod molestiae ullam nihil nostrum dolorem necessitatibus accusamus quo tenetur ad quibusdam vero recusandae nesciunt asperiores culpa repellendus nemo voluptate delectus totam, at dolorum quos dolores voluptas sit. Harum natus eos veniam neque nisi, expedita sint temporibus voluptatum cumque eius voluptates soluta iure. Tenetur quaerat soluta quod provident aliquid, praesentium magni sunt. Deleniti, consequuntur molestias nihil recusandae id enim quaerat quis cumque sit non quam ut! Necessitatibus maiores non deleniti, laudantium temporibus sit in eaque praesentium? Alias, quam. Maxime nisi officia fugiat aspernatur tenetur non. Iste enim exercitationem aspernatur necessitatibus? Dolores, ipsam vero? Sit, labore dolorem eius vel a nihil sed explicabo debitis, enim laboriosam iure animi hic ipsa? Excepturi odio explicabo est quisquam saepe atque laudantium cupiditate possimus magnam, illo doloremque iusto illum perspiciatis sint et unde? Eaque eligendi obcaecati tenetur voluptate dignissimos recusandae placeat dolore sed corporis nesciunt hic odio quas modi eum voluptates eveniet, magnam similique ea fuga aspernatur totam laudantium cumque eos qui. Praesentium culpa, maiores, a quae rem ratione iure tenetur nobis quasi corrupti ad asperiores harum! Consequatur quo molestiae totam cumque blanditiis nostrum. Possimus obcaecati dolorem at reiciendis accusamus! Numquam maiores dolorem voluptatibus alias necessitatibus repudiandae aperiam nulla quas magni cumque libero illo quos minus voluptas eveniet praesentium doloremque, vero aspernatur inventore suscipit veritatis.
            Lorem ipsum dolor sit amet, consectetur adipisicing elit. Quae in repellat eveniet, perspiciatis doloremque harum minus reprehenderit possimus ea illo aliquid maiores sed aspernatur porro iure. In, similique officia necessitatibus vitae quo placeat natus ad recusandae inventore reiciendis. Alias sequi quas voluptates. Officiis dolorum, veniam optio saepe, minima modi nihil accusantium maiores adipisci dicta sint velit eligendi ipsum consequuntur est ea facere iure ipsam earum nam nostrum qui repellat tempora ut. Dolores, tenetur. Tempora optio et, maiores deserunt a dolor explicabo, debitis ipsum reprehenderit nobis qui inventore vitae libero. Aut placeat quis, tenetur accusamus possimus illo esse totam corporis omnis! Voluptates distinctio libero voluptate repudiandae, numquam harum non reprehenderit sed totam mollitia aspernatur animi assumenda ea, incidunt amet omnis officiis sunt corporis. Numquam vero consectetur similique laudantium voluptatem ipsa doloribus temporibus rem aliquam. Autem quisquam error magni praesentium maiores saepe impedit nobis et! Facilis, provident! Corporis eaque neque vero sequi possimus commodi aspernatur fugiat, accusamus dolor officiis labore, id nulla cum mollitia magnam suscipit blanditiis consectetur. Praesentium, officiis fugit! Corporis velit modi delectus? Incidunt explicabo alias doloremque amet sequi voluptates vel, corporis a quisquam nihil consequuntur nisi qui ducimus dicta eius et itaque tempora facilis odio suscipit perspiciatis minima expedita?
        </p>
        <footer id="bottom" class="footer">
            <a href="#top">Back to Top</a><br>
            &copy;2021 MirthOsas_Concepts
        </footer>
    </div>
</body>
</html>
!

CSS 

              
                * {
    box-sizing: border-box;
}

body {
    margin: 0px;
}

.main-header {
    background: rgb(1, 104, 1);
    padding: 8px 16px;
    width: 100%;
}

.brand-name {
    font-weight: bold;
    font-size: 30px;
    display: inline-block;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
    vertical-align: middle;
}

.brand-name a {
    text-decoration: none;
    color: white;
}

.main-nav {
    display: inline-block;
    text-align: right;
    width: calc(100% - 105px);
    vertical-align: middle;
    
}

.main-nav-items {
    list-style: none;
    margin: 0px;
    padding: 0px;
}

.main-nav-item {
    display: inline-block;
    padding: 0px 16px;
    font-family: Verdana, Geneva, Tahoma, sans-serif;
}

.main-nav-item a {
    text-decoration: none;
    color: white;
}

.main-nav-item a:hover {
    color: rgb(1, 104, 1);
    background: white ;
}

.main-body {
    background: rgb(255, 255, 255);
    margin: 0px;
    padding: 10px;
    font-family: sans-serif;
    text-align: justify;
}

.footer {
    text-align: center;
}
!

JS
!
999px

Console