<body>
  <section>
    <div class="container">
      <div class="text">
        <h1>Page Not Found</h1>
        <p>We can't seem to find the page you're looking for. Please check the URL for any typos.</p>
        <div class="input-box">
          <input type="text" id="input-box" placeholder="Search..." autocomplete="off">
        </div>
        <div class="result-box"></div>
        <ul class="menu">
          <li><a href="#">Go to Homepage</a></li>
          <li><a href="#">Visit our Blog</a></li>
          <li><a href="#">Contact support</a></li>
        </ul>
      </div>
      <div><img class="image" src="https://omjsblog.files.wordpress.com/2023/07/errorimg.png" alt=""></div>
    </div>
    </div>
  </section>

</body>
@import url('https://fonts.googleapis.com/css2?family=Poppins&display=swap');
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Poppins', sans-serif;
}
body {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background: #22232e;
}
a{
  text-decoration: none;
}
ul{
  list-style: disc;
  color: #e0ffff;
}
section {
  width: 100%;
}
.container {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: row;
  column-gap: 20px;
}
.container img {
  width: 420px;
}
.text {
  display: block;
  padding: 40px 40px;
  width: 450px;
}
.text h1 {
  color: #00c2cb;
  font-size: 35px;
  font-weight: 700;
  margin-bottom: 15px;
}
.text p {
  font-size: 15px;
  color: #e0ffff;
  margin-bottom: 15px;
  line-height: 1.5rem;
  margin-bottom: 15px;
}
.text .input-box{
  position: relative;
  display: flex;
  width: 100%;
}
.input-box input{
  width: 85%;
  height: 40px;
  padding: 5px 15px;
  font-size: 16px;
  color: #22232e;
  border-radius: 5px 5px 0px 0px;
  border: none;
  outline: none;
}
.menu{
  display: flex;
  flex-direction: column;
  margin-top: 15px;
  margin-left: 30px;
}
.menu li a{
  display: flex;
  font-size: 1rem;
  color: #00c2cb;
  transition: 0.1s;
}
.result-box{
  width: 85%;
}
.result-box ul {
  border-top: 2px solid #42455a;
  padding: 10px 5px;
  background: #fff;
}
.result-box ul li {
  list-style: none;
  border-radius: 3px ;
  padding: 10px 5px;
  cursor: pointer;
  color: #22232e;
}
.result-box ul li:hover {
  background-color: #e0ffff;
}
.result-box {
  max-height: 100px;
  overflow: scroll;
  border-radius: 0px 0px 5px 5px;
}
.result-box li a{
  color: #22232e;
}
.result-box li:focus a{
  color: #e0ffff;
}
@media screen and (max-width:600px) {
  .container{
    display: flex;
    flex-direction: column-reverse;
  }
  .text,.image{
    width: 100%;
  } 
  .container{
    min-width: 200px;
    padding: 40px 0px;
  }
  .text{
    display: block;
    width: 100%;
    padding: 20px 40px;
  }
  .image{
    display: flex;
    width: 200px;
    align-self: center;
    justify-content: center;
    margin: auto;
  }
}
const resultsBox = document.querySelector(".result-box");
    const inputBox = document.getElementById("input-box");
  
    const links = [
      {
        href: "www.example.com/faqs",
        text: "Frequently asked questions",
      },
      {
        href: "www.example.com/blog/article",
        text: "Article Title",
      },
      {
        href: "www.example.com/contact",
        text: "Contact",
      },
    ];
  
    inputBox.onkeyup = function () {
      let result = [];
      let input = inputBox.value;
      if (input.length) {
        result = links.filter((link) => {
          return link.text.toLowerCase().includes(input.toLowerCase());
        });
      }
      display(result);
    }
    function display(result) {
  if (result.length) {
    const content = result.map((list, index) => {
      const href = list.href;
      return `<li><a href="${href}">${list.text}</a></li>`;
    });
    resultsBox.innerHTML = `<ul>${content.join('')}</ul>`;
  } else {
    resultsBox.innerHTML = '';
  }
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.