<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Stretch navigation</title>
  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/normalize/4.2.0/normalize.min.css">
  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/font-awesome/4.6.3/css/font-awesome.min.css">
  <link rel="stylesheet" href="css/main.css">
</head>
<body>
  <div class="box-menu">
    <div class="wrapper">
      <div class="hamburger">
        <span></span>
        <span></span>
        <span></span>
        <span></span>
      </div>
    </div>
    <div class="menu">
      <a href="#" class="active"><span class="icon fa fa-info-circle"></span><span class="text">About Us</span></a>
      <a href="#"><span class="icon fa fa-suitcase"></span><span class="text">Portfolio</span></a>
      <a href="#"><span class="icon fa fa-shopping-basket"></span><span class="text">Store</span></a>
      <a href="#"><span class="icon fa fa-phone"></span><span class="text">Contacts</span></a>
    </div>
  </div>
  
  <script src="https://code.jquery.com/jquery-2.2.4.min.js"></script>
  <script src="js/main.js"></script>
</body>
</html>
@import 'https://fonts.googleapis.com/css?family=Ubuntu';

body { background: #eee; }

.box-menu {
  position: absolute;
  left: 50px;
  top: 50px;
  cursor: pointer;
  background: #49A4EB;
  width: 60px;
  height: 60px;
  box-shadow: 2px 3px 5px rgba(0,0,0,.3);
  border-radius: 60px;
  transition: height .4s;
}
.full-menu {
  height: 300px;
}

.wrapper {
  position: relative;
  width: 60px;
  height: 60px;
}

/*ГАМБУРГЕР*/
.hamburger {
  position: absolute;
  left: 22px;
  top: 22px;
  width: 16px;
  height: 16px;
}
.hamburger span {
  position: absolute;
  display: inline-block;
  height: 2px;
  width: 100%;
  background: #fff;
  border-radius: 10px;
  /*transition: top .3s, transform .3s, left .3s, width .3s;*/
  transition: all .3s;
}

.hamburger span:nth-child(1) { top: 3px; }
.hamburger span:nth-child(2) { top: 8px; }
.hamburger span:nth-child(3) { top: 8px; }
.hamburger span:nth-child(4) { top: 13px; }

.hamburger.active span:nth-child(1) { width: 0; margin-left: 8px;}
.hamburger.active span:nth-child(2) { transform: rotate(45deg); }
.hamburger.active span:nth-child(3) { transform: rotate(-45deg); }
.hamburger.active span:nth-child(4) { width: 0; margin-left: 8px;}

/*ОСНОВНОЕ МЕНЮ*/
.menu {
  position: relative;
  left: -9999px;
}

.menu a {
  white-space: nowrap;
  position: relative;
  display: inline-block;
  color: #333;
  text-decoration: none;
  width: 150px;
  height: 58px;
  line-height: 58px;
  font-family: Ubuntu;
}
.menu a::after {
  content: '';
  position: absolute;
  left: 57px;
  top: 29px;
  height: 0px;
  width: 3px;
  background: #fff;
  transition: height .3s, top .3s;
}
.menu a.active::after {
  top: 19px;
  height: 20px;
}
.menu a span {
  opacity: 0;
  display: inline-block;
  font-size: 14px;
}
.menu a span.icon {
  transform: scale(.5);
  color: #fff;
  font-size: 18px;
  display: inline-block;
  width: 60px;
  text-align: center;
  transition: transform .3s;
}
.menu a span.text {
  text-shadow: 1px 1px 0px rgba(0,0,0,.3);
  opacity: 0;
  margin-left: 40px;
  transition: margin .3s, opacity .3s, transform .3s;
}

/*Развернутое меню*/
.full-menu .menu {
  left: 0;
}
.full-menu .menu a {
  /*opacity: .8;*/
}
.full-menu .menu a:hover span {
  opacity: 1; 
}
.full-menu .menu a span {
  opacity: .8;
}
.full-menu .menu a span.icon {
  transform: scale(1.1);
}
.full-menu .menu a span.text {
  margin-left: 25px;
  /*opacity: .7;*/
}
.full-menu .menu a:hover span.text {
  /*margin-left: 30px;*/
  transform: translateX(5px);
  transition-delay: 0s;
}

/*Анимация меню*/
.menu a:nth-child(1) span { transition: all .5s .1s, opacity .5s 0s, transform .5s 0s; }
.menu a:nth-child(2) span { transition: all .5s .15s, opacity .5s 0s, transform .5s 0s; }
.menu a:nth-child(3) span { transition: all .5s .2s, opacity .5s 0s, transform .5s 0s; }
.menu a:nth-child(4) span { transition: all .5s .25s, opacity .5s 0s, transform .5s 0s; }


$(function(){
  $('.box-menu .wrapper').on('click', function(){
    $('.box-menu').toggleClass('full-menu');
    $('.hamburger').toggleClass('active');
  });
  $('a').on('click', function(){
    $(this).siblings('a').removeClass('active');
    $(this).addClass('active');
  });
});

External CSS

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External JavaScript

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