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CSS

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HTML 

              
                <body>
   <header id="header">
    <nav id="nav-bar" class="navbar">
      <img id="header-img" src="https://i.postimg.cc/1tsLz4W8/logo.png">
      <a href="#" class="toggle-button">
        <span class="bar"></span>
        <span class="bar"></span>
        <span class="bar"></span>
      </a>
      <div class="navbar-links">
        <ul>
          <li><a class="nav-link" href="#home">Home</a></li>
          <li><a class="nav-link" href="#controller">Controller</a></li>
          <li><a class="nav-link" href="#specs">Specs</a></li>
          <li><a class="nav-link" href="#overview">Overview</a></li>
          <li><a class="nav-link" href="#games">Games</a></li>
        </ul>
      </div>
    </nav>
   </header>
    
      <section id="home">
     
          <img id="image1" src="https://i.postimg.cc/76Z82Lpq/CITYPNG-COM-Console-Of-Xbox-Series-X-With-Controller-891x1088.png">

          <div id="product-info">
            <h1 id="title"><b>Xbox<br>Series X</b></h1>
            <p id="info">
              The Fastest,<br> Most Powerful Xbox Ever
            </p>
            <button id="buy">Buy</button>
          </div> 
      </section>
      <section id="controller">
        <h1 id="heading1">Complete <br><span>Control</span></h1>
        <img id="image2" src="https://i.postimg.cc/L6vbS0Z9/CITYPNG-COM-Controller-Of-Microsoft-Xbox-Series-X-1920x1080-1.png">
        <h3 id="title2">FINE-TUNED PERFORMANCE</h3>
        <p id="info2">The Xbox Wireless Controller brings elegant design, refined comfort and instant sharing to a familiar favourite</p>
        <a class="link1" href="https://www.xbox.com/en-IN/accessories/controllers/xbox-wireless-controller" target="_blank"><span>Controller Details</span></a>
      </section>
    <section id="specs">
      <div id="container">
        <div class="card">
        <img src="https://i.postimg.cc/L8V0c0Q2/xbox-series-x-board-2.jpg" alt="">
        <h2><span>SPLIT MOTHERBOARD</span></h2>
        <p class="spec">
          A split motherboard keeps the console’s internals evenly temperature controlled allowing for an even higher output of power.
        </p>
        </div>
        <div class="card">
       <img src="https://i.postimg.cc/mkMm8dFx/xbox-series-x-vapor-chamber.jpg" alt="">
       <h2><span>VAPOUR CHAMBER</span></h2>
       <p class="spec">
        The vapour chamber in the Xbox Series X enables an even spread of temperatures within the core.
       </p>
        </div>
        <div class="card">
         <img src="https://i.postimg.cc/NF71KZH0/xbox-series-x-tech-chassis.jpg" alt="">
         <h2>
           <span>HEAT-SINK</span>
         </h2>
         <p class="spec">
          A heat-sink chassis is a unique, non-electronic component that merges parallel cooling with unique design to increase the reliability of performance.
         </p>
        </div>
      </div>
    </section>

      <section id="overview">
        <div id="container1">
          <img id="logo" src="https://i.postimg.cc/hvrYHL62/edd726a9-d648-4864-9863-c0f8d6b4fa00.png" alt="">
          <img id="image4" src="https://i.postimg.cc/4yh9HVHj/ezgif-com-gif-maker.gif">
          <h1 id="headline2">ENGINEERED <br> FOR <span>SPEED</span></h1>
          <p id="info4">
            Together, the new system on a chip (SOC) and the Xbox Velocity Architecture put speed at your fingertips, and the 1TB custom SSD & CPU put the wheel in your hands, so you can go from 0-60 in up to 120FPS.
          </p>
        </div>
          <div id="container2">
            <p id="info5">
              <span>Faster load times</span>. Sip quick. Games load significantly faster with the custom SSD in the Xbox Series X.
            </p>
            <iframe id="video" src="https://www.microsoft.com/en-IN/videoplayer/embed/RE4rH35?autoplay=true" frameborder="0"></iframe>
            <p id="info6"><span>Change the game.</span> With Quick Resume, you can seamlessly switch between multiple different titles and resume instantly from where you left off.</p>
        </div>

      </section>
      <section id="games">
        <div id="container3">
          <img id="image5" src="https://i.postimg.cc/C1pQsLm7/bb79c80c-4682-4463-965e-59a986783238.jpg" alt="">

          <img id="image6" src="https://i.postimg.cc/C5mr0CYr/bec81a1f-0bce-4f78-b8e2-b5a49a4a37ec.jpg" alt="">
  
          <img id="image7" src="https://i.postimg.cc/3xyfMDq9/7ac64cff-f54d-49aa-a5c6-7fd2b224903e.jpg" alt="">
  
          <img id="image8" src="https://i.postimg.cc/Zqpfnz4d/49eb5848-10f8-482c-8fed-f496ea7f8afe.jpg" alt="">
       </div>
       <div id="container4">
      <h1 id="headline3">INSTANT<br>
        <span>LIBRARY</span></h1>
        <p id="info7">Discover your next favourite game. Access over 100 high-quality games, plus get all the benefits of Xbox Live Gold and EA Play when you subscribe to Xbox Game Pass Ultimate.</p>
        <a class="link2" href="https://www.xbox.com/en-IN/xbox-game-pass"><span>Learn More</span></a>
       </div>
      </section>
      <footer>
        <h1>Get access to the exculsive <span>updates</span></h1>
        <form id="form" action="https://www.freecodecamp.com/email-submit).">
          <input type="email" id="email" placeholder="Email">
          <input id="submit" type="submit" value="submit">
         </form>
  

      </footer>
      
        
          
</body>
!

CSS 

              
                @import url('https://fonts.googleapis.com/css2?family=Roboto:wght@300&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Major+Mono+Display&family=Raleway&display=swap');
:root {
  --xbox-green:hsl(117, 87%, 57%);
  --xbox-gray: #201f24;
  --xbox-black: rgb(0, 0, 0);
  --heading:'Raleway', sans-serif;
  --content:'Roboto', sans-serif;
}
* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  background-color:var(--xbox-gray);
}
html{
  font-size: 100%;
  scroll-behavior: smooth;
}
section{
  width: 100vw;
  height: 100vh;
  
}
span {
  color: var(--xbox-green);
}

.navbar {
  display: flex;
  position: fixed;
  top: 0;
  justify-content: space-between;
  align-items: center;
  width: 100vw;
  background-color: #201f24;
  color: white;
  z-index: 10;
}
#header-img{
  width: 58px;
  padding:5px;
  position: relative;
  left: 1rem;
}
.navbar-links {
  height: 100%;
}

.navbar-links ul {
  display: flex;
  margin: 0;
  padding: 0;
}

.navbar-links li {
  list-style: none;
}

.navbar-links li a{
  display: block;
  text-decoration: none;
  font-size: 1.5rem;
  font-family: 'Roboto', sans-serif;
  color: white;
  padding: 1rem 2rem 1rem 2rem;
}
li>a:hover{
  color: var(--xbox-black);
}
.navbar-links li:hover{
background-color: var(--xbox-green);
transition: all 100ms ease;
}
.toggle-button {
  position: absolute;
  top: .75rem;
  right: 1rem;
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 21px;
}

.toggle-button .bar {
  height: 3px;
  width: 100%;
  background-color: white;
  border-radius: 10px;
}
section:nth-of-type(1){
 
  position: relative;
}
#image1{
  width: 40%;
position: absolute;
padding-top:clamp(3rem,1rem,3.5rem);
left: 5vw;
z-index: 3;
}
#product-info {
  width: 50%;
position: relative;
font-size: 62.5%;
  top: 5rem;
  right: 5rem;
  padding-left: 6rem;
  flex-direction: column;
  justify-content: flex-end;
  align-content: space-between;
  float: right;
}
#product-info:after {
 content: "";
  display: block;
  padding-bottom: 100%;
}

#title {
  color: var(--xbox-green);
  font-size: 8em;
  position: absolute;
  line-height: 1;
  font-family: 'Raleway', sans-serif;
  text-transform: uppercase;
}
#info {
 color: whitesmoke;
 position: absolute;
 top: 16rem;
  margin:0;
  font-family: 'Roboto', sans-serif;
  font-size: 5em;

}
#buy {
 
width: 200px;
height: 50px;
  border: 4px solid var(--xbox-green);
  color: var(--xbox-green);
  background-color: transparent;
  cursor: pointer;
  font-size: 3em;
  position: absolute;
  top: 28rem;
  font-family: 'Roboto', sans-serif;

}
#buy:hover{
  color: var(--xbox-black);
  background-color: var(--xbox-green);
  transition: 0.5s;
}

section:nth-of-type(2){
  position: relative;
}
#image2{
  width: 40%;
  padding-top: 2rem;
  position: absolute;
right: 4rem;
bottom: 5rem;
 
}
#heading1{
font-size: 5rem;
color: white;
font-family:var(--heading);
position: absolute;
left: 5rem;
bottom: 17rem;

}
#title2{
  font-size: 1.8rem;
  font-family: var(--heading);
  color: rgb(255, 255, 255);
  position: absolute;
  bottom: 15rem;
  left: 5rem;
}

#info2{
  text-align: start;
  font-family: var(--content);
  font-size: 1.5rem;
  color: aliceblue;
   width: 40%;
  position: absolute;
  bottom: 10rem;
  left: 5rem;
}
.link1:link{
  font-family: var(--heading);
  text-decoration: none;
  font-size: 2rem;
  position: absolute;
  bottom: 8rem;
  left: 5rem;
  cursor: pointer;

}
.link1:hover{
  border-bottom: 2px solid var(--xbox-green); 
}
section:nth-of-type(3){
  margin-bottom: 8rem;
}
#container{
display: grid;
grid-template-columns: repeat(3,1fr);
grid-gap: 2rem;
width: 80vw;
position: relative;
left: 8rem;
top: 4rem;
}
.card>img{
  width: 100%;
  -webkit-transition: 0.4s ease;
  transition: 0.4s ease;
}
.card>img:hover{
  -webkit-transform: scale(1.08);
  transform: scale(1.08);
}
.card>h2{
  font-family: var(--heading);
  font-size: 2rem;
}
.spec{
  font-family: var(--content);
  color: white;
  font-size: 1.5rem;
}

section:nth-of-type(4){
  position: relative;
  margin-bottom: 8rem;
}
#container1 {
  position: relative;
  display: flex;
  justify-content: center;
  align-content: center;
}
#logo{
  width:8%;
  position: absolute;
 left: 5rem;
 top: 8rem;
}
#image4 {
  width: 27%;
  position: absolute;
  top: 6rem;
}
#headline2 {
  color: azure;
  font-size: 4rem;
  position: absolute;
  margin-top: 15rem;
  left:5rem ;
  font-family: var(--heading);
}
#info4 {
  font-size: 1.5rem;
  font-family: var(--content);
  color: azure;
  text-align: left;
  width: 25%;
  position: absolute;
  top: 26rem;
  left:5rem;
}
#container2{
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: absolute;
  right: 3rem;
  bottom: 2rem;
  width: 30%;
  height: 80%;
}
#info5,#info6{
  font-family: var(--content);
  font-size: 1.5rem;
  color: white;
  text-align: left;
}
iframe{
  width: 100%;
  height: 50%;
}
section:nth-of-type(5){
  margin-bottom: 20rem;
}
#container3{
  position: relative;
  right: 3rem;
  top: 5rem;
  float: right;
  width: 60vw;
  height: 60vh;

  display: grid;
  grid-gap: 2rem;
  grid-template-columns: 2fr 2fr 1.5fr;
  grid-template-rows: 0.5fr 1fr 1fr;

}
#image5{
 grid-column: 1/2;
  grid-row:1/3;
  width: 100%;
}
#image6{
 width:  100%;
 grid-column: 2/4;
 grid-row: 1/2;
}
#image7{
  width:  100%;
  grid-column: 2/3;
  grid-row: 2/3;
}
#image8{
  width:  100%;
  grid-column: 3/4;
}
#container4{
  position: relative;
 width: 40vw;
 top: 8rem;
}
#headline3{
  color: white;
  font-size: 5rem;
  position: absolute;
  left: 5rem;
  font-family: var(--heading);
}
#info7{
  width: 50%;
  font-size: 1.5rem;
  font-family: var(--content);
  color: azure;
  text-align: left;
  position: absolute;
  top: 15rem;
  left: 5rem;
}
.link2:link{
  font-family: var(--heading);
  text-decoration: none;
  font-size: 2rem;
  position: absolute;
  top: 38rem;
  left: 5rem;
  cursor: pointer;

}
.link2:hover{
  border-bottom: 2px solid var(--xbox-green);
  
}
footer{
  height: 25vh;
  width: 100vw;
  background-color:  rgb(20, 20, 20);
  position: relative; 
  display: flex;
  
  justify-content: center;
  align-content: center;

}
footer>h1{
  font-family: var(--heading);
  font-size: 2rem;
  color: white;

}
 form{
   width:50%;
   height: 50%;
   position: relative;
   top: 2rem;
   right:3rem;
   display: flex;
   justify-content: space-around;
  
}
input[type="email"]{
  position: absolute;
  width: 50%;
  height: 50%;

  font-family: var(--heading);
  font-size: 1.5rem;
}

input[type="email"]::placeholder{
  font-family: var(--heading);
  opacity: 1;
  font-size: 1.5rem;

  
}
input[type="submit"]{
  position: absolute;
  right: 0;
  width: 20%;
  height: 50%;
 background-color: transparent;
 color: var(--xbox-green);
 font-family: var(--heading);
 font-size: 1.5rem;
 border: 2px solid var(--xbox-green);

}


@media (max-width: 800px) {
  .navbar {
      flex-direction: column;
      align-items: flex-start;
  }

  .toggle-button {
      display: flex;
  }

  .navbar-links {
      display: none;
      width: 100%;
  }

  .navbar-links ul {
      width: 100%;
      flex-direction: column;
  }

  .navbar-links ul li {
      text-align: center;
  }

  .navbar-links ul li a {
      padding: .5rem 1rem;
  }

  .navbar-links.active {
      display: flex;
  }
}
!

JS 

              
                const toggleButton = document.getElementsByClassName('toggle-button')[0]
const navbarLinks = document.getElementsByClassName('navbar-links')[0]

toggleButton.addEventListener('click', () => {
  navbarLinks.classList.toggle('active')
})
!
999px

Console