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HTML

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About the <head>

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!
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CSS

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CSS Base

About CSS Base

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JavaScript

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Babel includes JSX processing.

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HTML 

              
                <header>
    <a href="https://www.slicemypage.com" class="logo">SLICEmyPAGE</a>
    <nav>
        <ul>
            <li><a href="#home">Home</a></li>
            <li><a href="#about">About</a></li>
            <li><a href="#services">Services</a></li>
            <li><a href="#contact">Contact</a></li>
        </ul>
    </nav>
</header>
<main>
    <section id="home">
        <h3>Home</h3>
    </section>
    <section id="about">
        <h3>About</h3>
        <p>Aliquam sapien massa, ornare imperdiet cursus varius, bibendum fermentum felis. Sed quis dui at urna posuere tincidunt. Maecenas at nisi in justo sagittis laoreet et sed urna. Ut efficitur ultricies risus, et commodo nibh pellentesque a. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec pretium semper tellus. Mauris dui urna, dapibus sed velit in, imperdiet egestas massa. Maecenas molestie porta lectus non congue. In vestibulum condimentum scelerisque.</p>
        <p>Etiam ultrices enim ut nisl laoreet, at ultricies eros efficitur. Sed nec mauris pharetra nisl semper lacinia. Sed venenatis lectus ipsum. Nulla facilisi. Quisque aliquam rhoncus ex, ac dictum orci ullamcorper in. In hac habitasse platea dictumst. Nunc elementum auctor metus eu varius. Aliquam eu turpis ut augue sagittis aliquet. Mauris laoreet sem sed elit pharetra, a blandit dui interdum. Aliquam mollis luctus fringilla. Sed in tempor tortor. Phasellus placerat augue at enim molestie placerat. Quisque in sodales risus. Cras quis nisi varius, tincidunt enim non, interdum ipsum. Vivamus iaculis, nunc sit amet aliquet auctor, massa sapien vulputate turpis, non viverra nisl est eu diam.</p>
        <p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Praesent blandit elementum viverra. Phasellus et quam eu dolor laoreet tincidunt ut gravida odio. Duis ultricies, turpis quis dapibus sagittis, elit nulla dignissim urna, quis luctus velit ipsum ut risus. Nam tempor viverra risus eget accumsan. Integer porta tempus accumsan. Mauris dictum varius magna, eget luctus ligula vestibulum at. Etiam ex justo, lacinia a sollicitudin non, cursus in augue. Praesent augue lacus, ullamcorper vel mi non, blandit pretium tellus. Fusce blandit nunc eget elit porttitor lacinia. Cras justo justo, convallis non lorem sit amet, venenatis porttitor odio. Cras ac malesuada magna. Cras laoreet egestas eros in elementum. Donec tempor porttitor tortor nec feugiat. Integer feugiat orci pharetra condimentum egestas.</p>
        <p>Vivamus aliquam mi ac scelerisque commodo. Vestibulum vel nisi ut ex ultrices ornare. Phasellus et turpis quis arcu viverra placerat. Donec id nibh condimentum, sollicitudin libero ut, pulvinar magna. Nunc id sapien luctus elit scelerisque placerat facilisis et justo. Suspendisse potenti. Ut auctor, nisi non tempus finibus, odio eros elementum augue, lobortis porttitor nunc tellus eget justo. Aenean sollicitudin, justo non hendrerit ornare, sapien orci lacinia massa, ut vestibulum mauris elit blandit dui. Sed ultrices est sed diam ullamcorper placerat sit amet sit amet nunc. In faucibus posuere faucibus. In neque velit, vestibulum eget augue id, euismod scelerisque sem. Aenean viverra orci risus, in varius sem commodo sed. Suspendisse elit turpis, dapibus vitae bibendum et, viverra ac leo. Nullam blandit felis lorem, in laoreet eros faucibus posuere.</p>
    </section>
    <section id="services">
        <h3>Services</h3>
        <p>Aliquam sapien massa, ornare imperdiet cursus varius, bibendum fermentum felis. Sed quis dui at urna posuere tincidunt. Maecenas at nisi in justo sagittis laoreet et sed urna. Ut efficitur ultricies risus, et commodo nibh pellentesque a. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec pretium semper tellus. Mauris dui urna, dapibus sed velit in, imperdiet egestas massa. Maecenas molestie porta lectus non congue. In vestibulum condimentum scelerisque.</p>
        <p>Etiam ultrices enim ut nisl laoreet, at ultricies eros efficitur. Sed nec mauris pharetra nisl semper lacinia. Sed venenatis lectus ipsum. Nulla facilisi. Quisque aliquam rhoncus ex, ac dictum orci ullamcorper in. In hac habitasse platea dictumst. Nunc elementum auctor metus eu varius. Aliquam eu turpis ut augue sagittis aliquet. Mauris laoreet sem sed elit pharetra, a blandit dui interdum. Aliquam mollis luctus fringilla. Sed in tempor tortor. Phasellus placerat augue at enim molestie placerat. Quisque in sodales risus. Cras quis nisi varius, tincidunt enim non, interdum ipsum. Vivamus iaculis, nunc sit amet aliquet auctor, massa sapien vulputate turpis, non viverra nisl est eu diam.</p>
        <p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Praesent blandit elementum viverra. Phasellus et quam eu dolor laoreet tincidunt ut gravida odio. Duis ultricies, turpis quis dapibus sagittis, elit nulla dignissim urna, quis luctus velit ipsum ut risus. Nam tempor viverra risus eget accumsan. Integer porta tempus accumsan. Mauris dictum varius magna, eget luctus ligula vestibulum at. Etiam ex justo, lacinia a sollicitudin non, cursus in augue. Praesent augue lacus, ullamcorper vel mi non, blandit pretium tellus. Fusce blandit nunc eget elit porttitor lacinia. Cras justo justo, convallis non lorem sit amet, venenatis porttitor odio. Cras ac malesuada magna. Cras laoreet egestas eros in elementum. Donec tempor porttitor tortor nec feugiat. Integer feugiat orci pharetra condimentum egestas.</p>
        <p>Vivamus aliquam mi ac scelerisque commodo. Vestibulum vel nisi ut ex ultrices ornare. Phasellus et turpis quis arcu viverra placerat. Donec id nibh condimentum, sollicitudin libero ut, pulvinar magna. Nunc id sapien luctus elit scelerisque placerat facilisis et justo. Suspendisse potenti. Ut auctor, nisi non tempus finibus, odio eros elementum augue, lobortis porttitor nunc tellus eget justo. Aenean sollicitudin, justo non hendrerit ornare, sapien orci lacinia massa, ut vestibulum mauris elit blandit dui. Sed ultrices est sed diam ullamcorper placerat sit amet sit amet nunc. In faucibus posuere faucibus. In neque velit, vestibulum eget augue id, euismod scelerisque sem. Aenean viverra orci risus, in varius sem commodo sed. Suspendisse elit turpis, dapibus vitae bibendum et, viverra ac leo. Nullam blandit felis lorem, in laoreet eros faucibus posuere.</p>
    </section>
    <section id="contact">
        <h3>Contact</h3>
        <p>Aliquam sapien massa, ornare imperdiet cursus varius, bibendum fermentum felis. Sed quis dui at urna posuere tincidunt. Maecenas at nisi in justo sagittis laoreet et sed urna. Ut efficitur ultricies risus, et commodo nibh pellentesque a. Lorem ipsum dolor sit amet, consectetur adipiscing elit. Donec pretium semper tellus. Mauris dui urna, dapibus sed velit in, imperdiet egestas massa. Maecenas molestie porta lectus non congue. In vestibulum condimentum scelerisque.</p>
        <p>Etiam ultrices enim ut nisl laoreet, at ultricies eros efficitur. Sed nec mauris pharetra nisl semper lacinia. Sed venenatis lectus ipsum. Nulla facilisi. Quisque aliquam rhoncus ex, ac dictum orci ullamcorper in. In hac habitasse platea dictumst. Nunc elementum auctor metus eu varius. Aliquam eu turpis ut augue sagittis aliquet. Mauris laoreet sem sed elit pharetra, a blandit dui interdum. Aliquam mollis luctus fringilla. Sed in tempor tortor. Phasellus placerat augue at enim molestie placerat. Quisque in sodales risus. Cras quis nisi varius, tincidunt enim non, interdum ipsum. Vivamus iaculis, nunc sit amet aliquet auctor, massa sapien vulputate turpis, non viverra nisl est eu diam.</p>
        <p>Pellentesque habitant morbi tristique senectus et netus et malesuada fames ac turpis egestas. Praesent blandit elementum viverra. Phasellus et quam eu dolor laoreet tincidunt ut gravida odio. Duis ultricies, turpis quis dapibus sagittis, elit nulla dignissim urna, quis luctus velit ipsum ut risus. Nam tempor viverra risus eget accumsan. Integer porta tempus accumsan. Mauris dictum varius magna, eget luctus ligula vestibulum at. Etiam ex justo, lacinia a sollicitudin non, cursus in augue. Praesent augue lacus, ullamcorper vel mi non, blandit pretium tellus. Fusce blandit nunc eget elit porttitor lacinia. Cras justo justo, convallis non lorem sit amet, venenatis porttitor odio. Cras ac malesuada magna. Cras laoreet egestas eros in elementum. Donec tempor porttitor tortor nec feugiat. Integer feugiat orci pharetra condimentum egestas.</p>
        <p>Vivamus aliquam mi ac scelerisque commodo. Vestibulum vel nisi ut ex ultrices ornare. Phasellus et turpis quis arcu viverra placerat. Donec id nibh condimentum, sollicitudin libero ut, pulvinar magna. Nunc id sapien luctus elit scelerisque placerat facilisis et justo. Suspendisse potenti. Ut auctor, nisi non tempus finibus, odio eros elementum augue, lobortis porttitor nunc tellus eget justo. Aenean sollicitudin, justo non hendrerit ornare, sapien orci lacinia massa, ut vestibulum mauris elit blandit dui. Sed ultrices est sed diam ullamcorper placerat sit amet sit amet nunc. In faucibus posuere faucibus. In neque velit, vestibulum eget augue id, euismod scelerisque sem. Aenean viverra orci risus, in varius sem commodo sed. Suspendisse elit turpis, dapibus vitae bibendum et, viverra ac leo. Nullam blandit felis lorem, in laoreet eros faucibus posuere.</p>
    </section>
</main>
!

CSS 

              
                * {
	padding: 0;
	margin: 0
}

*, ::after, ::before {
	box-sizing: border-box;
}

p {
	margin-bottom: 20px;
}

html {
	scroll-behavior: smooth;
	scroll-padding-top: 80px;
}

body {
	font-family: 'Lato';
	font-size: 16px;
	line-height: 1.4;
}

header {
	position: fixed;
	left: 0;
	top: 0;
	width: 100%;
	height: 80px;
	padding: 0 25px;
	background: rgba(0, 0, 0, 0.5);
	color: #fff;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.logo {
	font-weight: 700;
	color: #fff;
	text-decoration: none;
}

nav ul {
	display: flex;
	list-style: none;
}

nav ul li {
	padding: 0 15px;
}

nav ul li a {
	color: #fff;
	text-decoration: none;
}

section {
	min-height: calc(100vh - 80px);
	padding: 60px 25px;
	background: #f5f5f5;
}

section h3 {
	font-size: 40px;
	line-height: 1;
	letter-spacing: 2px;
	text-transform: uppercase;
	margin-bottom: 30px;
}

#home {
	background: #ffce49;
	color: #000;
	display: flex;
	align-items: center;
	justify-content: center;
}

#about {
	background: #62419a;
	color: #fff;
}

#services {
	background: #fe763a;
	color: #fff;
}

#contact {
	background: #1e132d;
	color: #fff
}
!

JS 

              
                <!-- related article here - -->

<!-- https://learn.slicemypage.com/smooth-page-scroll-with-top-offset-with-css-only/ -->
!
999px

Console