<link href="https://fonts.googleapis.com/css?family=Work+Sans:400,600,700&display=swap" rel="stylesheet">
<div class="layout">
  <input name="nav" type="radio" class="nav home-radio" id="home" checked="checked" />
  <div class="page home-page">
    <div class="page-contents">
      <h1>Home</h1>
      <p>Lorem ipsum dolor sit, amet consectetur adipisicing elit. Quas voluptates dolore id aspernatur odit minus quidem deleniti ab rerum exercitationem dolores neque officiis explicabo possimus blanditiis sed, voluptatem ut. Ab?</p>
      <p><label for="about">Learn more</label></p>
    </div>
  </div>
  <label class="nav" for="home">
    <span>
      <svg viewBox="0 0 24 24" width="24" height="24" stroke="currentColor" stroke-width="2" fill="none" stroke-linecap="round" stroke-linejoin="round" class="css-i6dzq1"><path d="M3 9l9-7 9 7v11a2 2 0 0 1-2 2H5a2 2 0 0 1-2-2z"></path><polyline points="9 22 9 12 15 12 15 22"></polyline></svg>
      Home
    </span>
  </label>

  <input name="nav" type="radio" class="about-radio" id="about" />
  <div class="page about-page">
    <div class="page-contents">
      <h1>About</h1>
      <p>Amet consectetur adipisicing elit. Sed ipsam ad exercitationem, quo quae ullam, quidem laudantium corporis quis minima debitis nesciunt repellat. Quos dolore ex quis voluptas, minus ut?</p>
    </div>
  </div>
  <label class="nav" for="about">
    <span>
    <svg viewBox="0 0 24 24" width="24" height="24" stroke="currentColor" stroke-width="2" fill="none" stroke-linecap="round" stroke-linejoin="round" class="css-i6dzq1"><circle cx="12" cy="12" r="10"></circle><path d="M9.09 9a3 3 0 0 1 5.83 1c0 2-3 3-3 3"></path><line x1="12" y1="17" x2="12" y2="17"></line></svg>
    About
      </span>
    </label>

  <input name="nav" type="radio" class="contact-radio" id="contact" />
  <div class="page contact-page">
    <div class="page-contents">
      <h1>Contact</h1>
      <p>Eaque accusamus magnam error unde nam, atque provident omnis fugiat quam necessitatibus vel nulla sed quibusdam fuga veritatis assumenda alias quidem asperiores?</p>
      <p><a href="#">Get in touch</a></p>
    </div>
  </div>
  <label class="nav" for="contact">
    <span>
    <svg viewBox="0 0 24 24" width="24" height="24" stroke="currentColor" stroke-width="2" fill="none" stroke-linecap="round" stroke-linejoin="round" class="css-i6dzq1"><path d="M21 11.5a8.38 8.38 0 0 1-.9 3.8 8.5 8.5 0 0 1-7.6 4.7 8.38 8.38 0 0 1-3.8-.9L3 21l1.9-5.7a8.38 8.38 0 0 1-.9-3.8 8.5 8.5 0 0 1 4.7-7.6 8.38 8.38 0 0 1 3.8-.9h.5a8.48 8.48 0 0 1 8 8v.5z"></path></svg>
    Contact
      </span>
    
  </label>
</div>

*{
  font-family: 'Work Sans', sans-serif;
}
html, body{
  height: 100%;
  color: #1a1b1c;
}

label, a{
  cursor: pointer;
  user-select: none;
  text-decoration: none;
  display: inline-block;
  color: inherit;
  transition: border 0.2s;
  border-bottom: 5px solid rgba(#8e44ad, 0.2);
  padding: 3px 2px;
  &:hover{
    border-bottom-color: #9b59b6;
  }
}

.layout{
  display: grid;
  height: 100%;
  width: 100%;
  overflow: hidden;
  grid-template-rows: 50px 1fr;
  grid-template-columns: 1fr 1fr 1fr;
}

input[type="radio"]{
  display: none;
}

label.nav{
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border-bottom: 2px solid #8e44ad;
  background: #ecf0f1;
  user-select: none;
  transition: background 0.4s, padding-left 0.2s;
  padding-left: 0;
  input[type="radio"]:checked + .page + &{
    background: #9b59b6;
    color: #ffffff;
    padding-left: 20px;
    span{
      padding-left: 20px  
    }
    svg{
      opacity: 1;
    }
  }
  span{
    padding-left: 0px;
    position: relative;
  }
  svg{
    left: 0;
    top: -3px;
    position: absolute;
    width: 15px;
    opacity: 0;
    transition: opacity 0.2s;
  }
}

.page{
  grid-column-start: 1;
  grid-row-start: 2;
  grid-column-end: span 3;
  padding: 0px 20px;
  display: flex;
  align-items: center;
}

.page-contents > *{
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.2s, transform 0.2s;
  @for $c from 1 through 20{
    &:nth-child(#{$c}){
      transition-delay: 0.2s + ($c * 0.2s);
    }
  }
}

input[type="radio"] + .page{
  transition: transform 0.2s;
  transform: translateX(100%);
}

input[type="radio"]:checked + .page{
  transform: translateX(0%);
  .page-contents > *{
    opacity: 1;
    transform: translateY(0px);
  }
}

.page-contents{
  max-width: 100%;
  width: 500px;
  margin: 0 auto;
}