Adaptive navigation

index.html

<div class="primary-nav-button">
  <button class="hamburger hamburger--collapse js-nav-toggle" type="button">
    <span class="hamburger-box">
      <span class="hamburger-inner"></span>
    </span>
  </button>
</div>

<nav class="primary-nav primary-nav--header">
  <ul class="primary-nav__list">
    <li class="primary-nav__item"><a class="primary-nav__link empty-link js-nav-link" href="#types-of-cufflinks">Типы запонок</a></li>
    <li class="primary-nav__item"><a class="primary-nav__link empty-link js-nav-link" href="#types-of-work">Примеры работ</a></li>
    <li class="primary-nav__item"><a class="primary-nav__link empty-link js-nav-link" href="#order-process">Процесс заказа</a></li>
    <li class="primary-nav__item"><a class="primary-nav__link empty-link js-nav-link" href="#contacts">Контакты</a></li>
  </ul>
</nav>

main.css

.primary-nav__list {
  padding: 0px;
  margin: 0px;
  list-style-type: none;
  zoom: 1;
}

.primary-nav__list:after,
.primary-nav__list:before {
  content: "";
  display: table;
}

.primary-nav__list:after {
  clear: both;
}

.primary-nav__item {
  float: left;
}

.primary-nav__item:not(:first-child) {
  padding-left: 18px;
}

.primary-nav__link {
  color: #fff;
  text-decoration: none;
}

.primary-nav-button{
	display: none;
}

/*start hamburger button*/
.hamburger{
	padding: 15px 15px;
	display: inline-block;
	cursor: pointer;
	transition-property: opacity, -webkit-filter;
	transition-property: opacity, filter;
	transition-property: opacity, filter, -webkit-filter;
	transition-duration: 0.15s;
	transition-timing-function: linear;
	font: inherit;
	color: inherit;
	text-transform: none;
	background-color: transparent;
	border: 0;
	margin: 0;
	overflow: visible;
}
.hamburger:hover{
	opacity: 0.7;
}
.hamburger:focus{
	outline:0;
}
.hamburger-box{
	width: 40px;
	height: 24px;
	display: inline-block;
	position: relative;
}
.hamburger-inner{
	display: block;
	top: 50%;
	margin-top: -2px;
}
.hamburger-inner, .hamburger-inner::before, .hamburger-inner::after{
	width: 40px;
	height: 3px;
	background-color: #fff;
	border-radius: 0;
	position: absolute;
	transition-property: -webkit-transform;
	transition-property: transform;
	transition-property: transform, -webkit-transform;
	transition-duration: 0.15s;
	transition-timing-function: ease;
}
.hamburger-inner::before, .hamburger-inner::after{
	content: "";
	display: block;
}
.hamburger-inner::before{
	top: -10px;
}
.hamburger-inner::after{
	bottom: -10px;
}
/*Collapse - effect*/
.hamburger--collapse .hamburger-inner{
	top: auto;
	bottom: 0;
	transition-duration: 0.15s;
	transition-delay: 0.15s;
	transition-timing-function: cubic-bezier(0.55, 0.055, 0.675, 0.19);
}
.hamburger--collapse .hamburger-inner::after{
	top: -20px;
	transition: top 0.3s 0.3s cubic-bezier(0.33333, 0.66667, 0.66667, 1), opacity 0.1s linear;
}
.hamburger--collapse .hamburger-inner::before{
	transition: top 0.12s 0.3s cubic-bezier(0.33333, 0.66667, 0.66667, 1), -webkit-transform 0.15s cubic-bezier(0.55, 0.055, 0.675, 0.19);
	transition: top 0.12s 0.3s cubic-bezier(0.33333, 0.66667, 0.66667, 1), transform 0.15s cubic-bezier(0.55, 0.055, 0.675, 0.19);
	transition: top 0.12s 0.3s cubic-bezier(0.33333, 0.66667, 0.66667, 1), transform 0.15s cubic-bezier(0.55, 0.055, 0.675, 0.19), -webkit-transform 0.15s cubic-bezier(0.55, 0.055, 0.675, 0.19);
}
.hamburger--collapse.is-active .hamburger-inner{
	-webkit-transform: translate3d(0, -10px, 0) rotate(-45deg);
	transform: translate3d(0, -10px, 0) rotate(-45deg);
	transition-delay: 0.32s;
	transition-timing-function: cubic-bezier(0.215, 0.61, 0.355, 1);
}
.hamburger--collapse.is-active .hamburger-inner::after{
	top: 0;
	opacity: 0;
	transition: top 0.3s cubic-bezier(0.33333, 0, 0.66667, 0.33333), opacity 0.1s 0.27s linear;
}
.hamburger--collapse.is-active .hamburger-inner::before{
	top: 0;
	-webkit-transform: rotate(-90deg);
	transform: rotate(-90deg);
	transition: top 0.12s 0.18s cubic-bezier(0.33333, 0, 0.66667, 0.33333), -webkit-transform 0.15s 0.42s cubic-bezier(0.215, 0.61, 0.355, 1);
	transition: top 0.12s 0.18s cubic-bezier(0.33333, 0, 0.66667, 0.33333), transform 0.15s 0.42s cubic-bezier(0.215, 0.61, 0.355, 1);
	transition: top 0.12s 0.18s cubic-bezier(0.33333, 0, 0.66667, 0.33333), transform 0.15s 0.42s cubic-bezier(0.215, 0.61, 0.355, 1), -webkit-transform 0.15s 0.42s cubic-bezier(0.215, 0.61, 0.355, 1);
}
/*end hamburger button */

main.js

function menuToggle(menu, button){
    button.toggleClass('is-active');
    menu.slideToggle(300);
}

$('.js-nav-toggle').on('click', function(){
  menuToggle($('.primary-nav'), $(this));
});