<div class="burger">
  <span></span>
</div>

<nav>
  <ul class="main">
    <li><a href="#0">Home</a></li>
    <li><a href="#0">Shop</a></li>
    <li><a href="#0">About</a></li>
    <li><a href="#0">Contact</a></li>
    <li><a href="#0">Cart <span>(5)</span></a></li>
  </ul>
  
  <div class="about">
    <p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa.</p>
  </div>
  
  <div class="social">
    <a href="#0" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="64px" height="64px" viewBox="0 0 64 64"><g transform="translate(0, 0)"><path d="M64,12.2c-2.4,1-4.9,1.8-7.5,2.1c2.7-1.6,4.8-4.2,5.8-7.3c-2.5,1.5-5.3,2.6-8.3,3.2C51.5,7.6,48.1,6,44.3,6 c-7.3,0-13.1,5.9-13.1,13.1c0,1,0.1,2,0.3,3C20.6,21.6,10.9,16.3,4.5,8.4c-1.1,1.9-1.8,4.2-1.8,6.6c0,4.6,2.3,8.6,5.8,10.9 c-2.2-0.1-4.2-0.7-5.9-1.6c0,0.1,0,0.1,0,0.2c0,6.4,4.5,11.7,10.5,12.9c-1.1,0.3-2.3,0.5-3.5,0.5c-0.8,0-1.7-0.1-2.5-0.2 c1.7,5.2,6.5,9,12.3,9.1c-4.5,3.5-10.2,5.6-16.3,5.6c-1.1,0-2.1-0.1-3.1-0.2C5.8,55.8,12.7,58,20.1,58c24.2,0,37.4-20,37.4-37.4 c0-0.6,0-1.1,0-1.7C60,17.1,62.2,14.8,64,12.2z"></path></g></svg></a>
    <a href="#0" target="_blank"><svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" x="0px" y="0px" width="64px" height="64px" viewBox="0 0 64 64"><g transform="translate(0, 0)"><path d="M32,5.766c8.544,0,9.556,0.033,12.931,0.187c3.642,0.166,7.021,0.895,9.621,3.496 c2.6,2.6,3.329,5.979,3.496,9.621c0.154,3.374,0.187,4.386,0.187,12.931s-0.033,9.556-0.187,12.931 c-0.166,3.642-0.895,7.021-3.496,9.621c-2.6,2.6-5.98,3.329-9.621,3.496c-3.374,0.154-4.386,0.187-12.931,0.187 s-9.557-0.033-12.931-0.187c-3.642-0.166-7.021-0.895-9.621-3.496c-2.6-2.6-3.329-5.979-3.496-9.621 C5.798,41.556,5.766,40.544,5.766,32s0.033-9.556,0.187-12.931c0.166-3.642,0.895-7.021,3.496-9.621 c2.6-2.6,5.979-3.329,9.621-3.496C22.444,5.798,23.456,5.766,32,5.766 M32,0c-8.691,0-9.78,0.037-13.194,0.193 c-5.2,0.237-9.768,1.511-13.436,5.178C1.705,9.037,0.43,13.604,0.193,18.806C0.037,22.22,0,23.309,0,32 c0,8.691,0.037,9.78,0.193,13.194c0.237,5.2,1.511,9.768,5.178,13.436c3.666,3.666,8.234,4.941,13.436,5.178 C22.22,63.963,23.309,64,32,64s9.78-0.037,13.194-0.193c5.199-0.237,9.768-1.511,13.436-5.178c3.666-3.666,4.941-8.234,5.178-13.436 C63.963,41.78,64,40.691,64,32s-0.037-9.78-0.193-13.194c-0.237-5.2-1.511-9.768-5.178-13.436 c-3.666-3.666-8.234-4.941-13.436-5.178C41.78,0.037,40.691,0,32,0L32,0z"></path> <path data-color="color-2" d="M32,15.568c-9.075,0-16.432,7.357-16.432,16.432c0,9.075,7.357,16.432,16.432,16.432 S48.432,41.075,48.432,32C48.432,22.925,41.075,15.568,32,15.568z M32,42.667c-5.891,0-10.667-4.776-10.667-10.667 c0-5.891,4.776-10.667,10.667-10.667c5.891,0,10.667,4.776,10.667,10.667C42.667,37.891,37.891,42.667,32,42.667z"></path> <circle data-color="color-2" cx="49.082" cy="14.918" r="3.84"></circle></g></svg></a>
  </div>
  
  <ul class="sub">
    <li><a href="#0">FAQ &amp; Shipping</a></li>
    <li><a href="#0">Terms &amp; Conditions</li>
  </ul>
</nav>

<div class="overlay"></div>
/*  COLORS
========================================== */
$black: #000000;
$white: #ffffff;
$gray: #2a2a2a;
$gold: #b7ac7f;

/*  FONTS
========================================== */

$raleway: 'Raleway', sans-serif;
$spectral: 'Spectral', serif;


/*  MIXINS
========================================== */

@mixin transform($transform) {
  -webkit-transform: $transform;
     -moz-transform: $transform;
      -ms-transform: $transform;
       -o-transform: $transform;
          transform: $transform;
}

@mixin transition($transition) {
  -webkit-transition: #{$transition};
     -moz-transition: #{$transition};
       -o-transition: #{$transition};
          transition: #{$transition};
}

@mixin transition-delay($transition-delay) {
  -webkit-transition-delay: #{$transition-delay};
     -moz-transition-delay: #{$transition-delay};
       -o-transition-delay: #{$transition-delay};
          transition-delay: #{$transition-delay};
}

/*  RESET
========================================== */

*, *:before, *:after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  width: 100%;
  height: 100%;
  
  &.overflow {
    overflow: hidden;
  }
}

/*  BURGER
========================================== */

.burger {
  width: 50px;
  height: 50px;
  position: fixed;
  top: 20px;
  right: 20px;
  border-radius: 4px;
  z-index: 10;
  
  span {
    @include burger(30px, 3px, 6px, $gray); // gray
    position: absolute;
    top: 50%;
    left: 50%;
    margin-left: -15px;
    margin-top: -1.5px;
  }
  
  &.clicked {
    span {
      @include burger-to-cross;
      
      &:before, &:after {
        background-color: $white;
      }
    }
  }
  
  &:hover {
    cursor: pointer;
  }
}


/*  NAV
========================================== */

nav {
  background-color: $gray;
  position: fixed;
  z-index: 9;
  top: 0;
  right: 0;
  height: 100%;
  max-width: 515px;
  width: 100%;
  padding: 100px 40px 60px 40px;
  overflow-y: auto;
  @include transform(translateX(100%));
  @include transition(transform .55s cubic-bezier(0.785, 0.135, 0.15, 0.86));
  
  &.show {
    @include transform(translateX(0px));
    
    ul.main {
      li {
        @include transform(translateX(0px));
        opacity: 1;
        
        @for $i from 1 to 10 { 
          &:nth-child(#{$i}) {
            transition-delay: $i * 0.15s;
          }
        }
      }
    }
    
    .about, .social, ul.sub {
      @include transform(translateY(0px));
      opacity: 1;
      transition-delay: .85s;
    }
  }
  
  @media (min-width: 667px) {
    padding: 120px 90px 70px 90px;
  }
   
  ul.main {
    list-style-type: none;
    
    li {
      margin-bottom: 20px;
      @include transform(translateX(40px));
      opacity: 0;
      @include transition(all .3s ease);
      
      &:last-of-type {
        margin-bottom: 0px;
      }
      
      a {
        color: $white;
        font-family: $raleway;
        text-decoration: none;
        text-transform: uppercase;
        font-size: 1.5rem;
        display: block;
        letter-spacing: 5px;
        font-weight: 600;
        padding: 10px 0;
        @include transition(all .3s ease);
        
        span {
          color: $gold;
        }
        
        &:hover {
          color: $gold;
        }
      }
    }
  }
  
  .about {
    margin-top: 40px;
    @include transform(translateY(30px));
    opacity: 0;
    @include transition(all .4s ease);
    
    p {
      color: $white;
      font-family: $spectral;
      font-size: 1.05rem;
      letter-spacing: 0.5px;
      line-height: 170%;
    }
  }
  
  .social {
    margin-top: 40px;
    position: relative;
    padding-bottom: 30px;
    @include transform(translateY(30px));
    opacity: 0;
    @include transition(all .4s ease);
    
    &:after {
      content: "";
      width: 230px;
      height: 2px;
      background-color: $gold;
      position: absolute;
      bottom: 0;
      left: 0;
    }
    
    a {
      display: inline-block;
      width: 30px;
      height: 30px;
      margin-right: 25px;
      
      &:last-of-type {
        margin-right: 0px;
      }
      
      &:hover {
        svg {
          path, circle {
            fill: $gold;
          }
        }
      }
      
      svg {
        width: 100%;
        height: 100%;
        
        path, circle {
          fill: $white;
          @include transition(all .3s ease);
        }
      }
    }
  }
  
  ul.sub {
    list-style-type: none;
    margin-top: 40px;
    @include transform(translateY(30px));
    opacity: 0;
    @include transition(all .4s ease);
    
    li {
      margin-bottom: 10px;
      
      &:last-of-type {
        margin-bottom: 0px;
      }
      
      a {
        color: $white;
        font-family: $raleway;
        letter-spacing: 1px;
        font-size: 0.9rem;
        text-decoration: none;
        @include transition(all .3s ease);
        
        &:hover {
          color: $gold;
        }
      }
    }
  }
}


/*  OVERLAY
========================================== */

.overlay {
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1;
  width: 100%;
  height:100%;
  @include transition(all 0.3s ease-in-out);
  background-color: $gold;
  opacity: 0;
  visibility: hidden;
  
  &.show {
    opacity: 0.8;
    visibility: visible;
  }
}
View Compiled
$('.burger, .overlay').click(function(){
  $('.burger').toggleClass('clicked');
  $('.overlay').toggleClass('show');
  $('nav').toggleClass('show');
  $('body').toggleClass('overflow');
});

External CSS

  1. https://raw.githubusercontent.com/jorenvanhee/sass-burger/master/_burger.scss
  2. https://fonts.googleapis.com/css?family=Raleway|Spectral

External JavaScript

  1. https://cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js