Edit in JSFiddle

$('.icon').click(function(){
	$('.icon, ul').toggleClass('active');
});

<nav>
  <div class="toggle">
    <div class="icon">
      <div class="hamburger"></div>
    </div>
  </div>
  <ul>
    <li><a href="#">Home</a></li>
    <li><a href="#">About</a></li>
    <li><a href="#">Sercices</a></li>
    <li><a href="#">Portfolio</a></li>
    <li><a href="#">Contact</a></li>    
  </ul>
</nav>

body{
  margin: 0;
  padding: 0;
  font-family: sans-serif;
}
nav{
  width: 100%;
  background: #00316b;
}
ul{
  width: 80%;
  margin: 0 auto;
}
ul li{
  list-style: none;
  display: inline-block;
  padding: 20px;
}
ul li:hover{
  background: #e91e63;
}
ul li a{
  color: #fff;
  text-decoration: none;
}
.toggle{
  width: 100%;
  padding: 10px 20px;
  background: #001f44;
  box-sizing: border-box;
  display: none;
}
@media(max-width:768px){
  .toggle{
    display: block;
  }
  ul{
    width: 100%;
    display: none;
  }
  ul li{
    display: block;
    text-align: center;
  }
  .active{
    display: block;
  }
}
.icon{
  position: relative;
  width: 80px;
  height: 80px;
  cursor: pointer;
  margin: 0 0 0 auto;
}
.hamburger{
  width: 50px;
  height: 6px;
  background: #fff;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  box-shadow: 0 2px 5px rgba(0,0,0,.2);
  transition: .5s;
}
.hamburger:before,
.hamburger:after{
  content: '';
  position: absolute;
  width: 50px;
  height: 6px;
  left:0;
  background: #fff;
  box-shadow: 0 2px 5px rgba(0,0,0,.2);
  transition: .5s;
}

.hamburger:before{
  top: -16px;
}
.hamburger:after{
  top: 16px;
}
.icon.active .hamburger{
  background: rgba(0,0,0,0);
  box-shadow: 0 2px 5px rgba(0,0,0,0);
}
.icon.active .hamburger:before{
  top: 0;
  transform: rotate(45deg);
}
.icon.active .hamburger:after{
  top: 0;
  transform: rotate(135deg);
}