<body>
    <header>
        <h1>My Website</h1>
        <nav>
            <ul>
                <li><a href="#">Link 1</a></li>
                <li><a href="#">Link 2</a></li>
                <li><a href="#">Link 3</a></li>
            </ul>
        </nav>
    </header>
    <nav class="buttons">
        <ul>
            <li><a href="#01" class="button">Section 1</a></li>
            <li><a href="#02" class="button">Section 2</a></li>
            <li><a href="#03" class="button">Section 3</a></li>
        </ul>
    </nav>
    <section id="01" class="num001">Section 1</section>
    <section id="02" class="num002">Section 2</section>
    <section class="num003" id="03">Section 3</section>
</body>
/* styles.css */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 130px;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
}

header {
  position: fixed;
  width: 100%;
    height: 100px;

  inset: 0;
    background-color: #333;
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-around;
    padding: 0 20px;
}

header h1{
font-size: 16px;

}


header nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
    padding: 0;
    margin: 0;
  padding-left: 200px;
}

header nav ul li {
    display: inline;
}

header nav ul li a {
    color: white;
    text-decoration: none;
}

nav.buttons {
  padding: 140px 0 100px;
    background-color: #444;

    display: flex;
    justify-content: center;
}

nav.buttons ul {
    list-style: none;
    display: grid;
  
    gap: 20px;
    padding: 0;
    margin: 0;
}

nav.buttons ul li {
    display: inline;
}

nav.buttons ul li a.button {
    display: inline-block;
    width: 200px;
    padding: 10px 20px;
    background-color: #3e68ff;
    color: white;
    text-align: center;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
}

nav.buttons ul li a.button:hover {
    background-color: #2a4ebf;
}

section {
  padding-top: 40px;
    height: 100vh;
    display: flex;
    align-items: start;
    justify-content: center;
    font-size: 2rem;
    border-bottom: 1px solid #ccc;
  background-color: red;
}

.num001 { 
  background-color: #f4a261;
}
.num002 { 
  background-color: #2a9d8f;
}
.num003 {
  background-color: #e76f51;
}

External CSS

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External JavaScript

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