<div class="wrapper">
  <nav class="nav-area">
    <ul>
      <li>
        <label>Home</label>
      </li>
      <input type="radio" name="nav-area" id="about">
      <li>
        <label for="about" class="title">About</label>
        <a href="#">Our History</a>
        <a href="#">Our Vision</a>
        <a href="#">Our Mission</a>
        <a href="#">Our Goal</a>
      </li>
      <input type="radio" name="nav-area" id="services">
      <li>
        <label for="services">Services</label>
        <a href="#">Graphics Design</a>
        <a href="#">Web Design</a>
        <a href="#">Web Developemnt</a>
        <a href="#">Digital Marketing</a>
      </li>
      <input type="radio" name="nav-area" id="portfolio">
      <li>
        <label for="portfolio">Portfolio</label>
        <a href="#">Project One</a>
        <a href="#">Project Two</a>
        <a href="#">Project Three</a>
        <a href="#">Project Four</a>
      </li>
      <li>
        <label>Contact</label>
      </li>
    </ul>
  </nav>
  <div class="left-content">
    <h1>WelCome To Our Website</h1>
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
    <p>Lorem Ipsum is simply dummy text of the printing and typesetting industry. Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.</p>
  </div>
</div>




<!--- ignore the code below-->

<div class="link-area">
  <a href="https://www.youtube.com/channel/UCki4IDK86E6_pDtptmsslow" target="_blank">Click for More</a>
</div>

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}
body {
  font-family: Poppins;
}
.wrapper {
  width: 100%;
  height: 100%;
}
nav {
  position: fixed;
  display: flex;
  align-items: flex-start;
  width: 20%;
  height: 100%;
  background-color: #BC382D;
}
.left-content {
  position: fixed;
  right: 0;
  width: 80%;
  height: 100%;
  background-color: #fff;
  overflow: auto;
  padding: 40px;
}
.left-content h1 {
  font-weight: bold;
  margin-bottom: 50px;
  font-size: 55px;
  text-align: center;
}

li, label, ul, a {
  width: 100%;
  color: #FFF;
  display: block;
  font-weight: bold;
}
.nav-area ul label {
  height: 35px;
}
.nav-area ul li{
  height: 35px;
  overflow: hidden;
  transition: all .3s;
  display: block;
  background-color: #BC382D;
}

.nav-area label {
  font-size: 14px;
  background: linear-gradient(#262626, #BC382D);
  padding: 10px 15px;
  cursor: pointer;
  transition: all .25s;
}
.nav-area a{
  font-size: 12px;
  text-decoration: none;
  color: #FFF;
  display: block;
  padding: 8px 25px;
  transition: all .25s;
}
.nav-area a:hover {
  background-color: #262626;
}

.nav-area input[type="radio"] {
  display: none;
}
#about:checked + li, #services:checked + li, #portfolio:checked + li {
  height: 180px;
}

@media screen and (max-width: 600px){
  nav {
    width: 100%;
    position: relative;
  }
  .left-content h1{
    font-size: 28px;
  }
  .left-content {
    width: 100%;
    position: relative;
  }
}




/* ignore the code below */


.link-area
{
  position:fixed;
  bottom:20px;
  left:20px;  
  padding:15px;
  border-radius:40px;
  background:tomato;
}
.link-area a
{
  text-decoration:none;
  color:#fff;
  font-size:25px;
}