<script src="https://cdnjs.cloudflare.com/ajax/libs/responsive-nav.js/1.0.32/responsive-nav.min.js"></script>

<nav class="nav-collapse" role="navigation">
    <ul class="tabs primary-nav">
        <li class="tabs__item">
            <a href="#" class="tabs__link">Главная</a>
        </li>
        <li class="tabs__item">
            <a href="#" class="tabs__link">Talks</a>
        </li>
        <li class="tabs__item">
            <a href="#" class="tabs__link">Schedule</a>
        </li>
        <li class="tabs__item">
            <a href="#" class="tabs__link">Location</a>
        </li>
        <li class="tabs__item">
            <a href="#" class="tabs__link">Contact</a>
        </li>
    </ul>
</nav>

.tabs {
    margin:  0;
    padding: 0;
    list-style: none;
    display: table; /* [1] */
    table-layout: fixed; /* [2] */
    width: 100%; /* [3] */
}

    .tabs__item {
        width: 100%;
        float: left;
    }

    @media screen and (min-width: 40em) {
        .tabs__item {
          display: table-cell; /* [4] */
          float: none;
          width: auto;
        }
    }

        .tabs__link {
            display: block; /* [5] */
        }

.primary-nav {
    text-align: center;
    border-radius: 0;
    overflow: hidden; /* [1] */
}

        .primary-nav a {
            padding: .75em 1em;
            color: white;
            background: rgba(255, 255, 255, 0.1);
            color: #fff;
            text-decoration: none;
            border-right: 1px solid #000;
            font-family: Share, Helvetica, Arial, sans-serif;
            font-weight: 400;
            font-size: 1.75em;
        }

        .primary-nav a:hover {
            color: black;
            background: #f8d800;
        }

.js .nav-collapse {
  clip: rect(0 0 0 0);
  max-height: 0;
  position: absolute;
  display: block;
  overflow: hidden;
  zoom: 1;
}

.nav-collapse.opened {
  max-height: 9999px;
}

.disable-pointer-events {
  pointer-events: none !important;
}

.nav-toggle {
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  -o-user-select: none;
  user-select: none;
}

@media screen and (min-width: 40em) {
  .js .nav-collapse {
    position: relative;
  }
  .js .nav-collapse.closed {
    max-height: none;
  }
  .nav-toggle {
    display: none;
  }
}

.nav-collapse {
  list-style: none;
  width: 100%;
  float: left;
}

.fixed {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
}

.nav-toggle {
  position: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  text-decoration: none;
  text-indent: -999px;
  position: relative;
  overflow: hidden;
  width: 70px;
  height: 55px;
  float: right;
}

.nav-toggle:before {
  color: #f8d800; /* Edit this to change the icon color */
  font-family: "responsivenav", sans-serif;
  font-style: normal;
  font-weight: normal;
  font-variant: normal;
  font-size: 28px;
  text-transform: none;
  position: absolute;
  content: "≡";
  text-indent: 0;
  text-align: center;
  line-height: 55px;
  speak: none;
  width: 100%;
  top: 0;
  left: 0;
}

.nav-toggle.active::before {
  font-size: 24px;
  content:"x";
}

var navigation = responsiveNav(".nav-collapse", {
  animate: true,                    
  transition: 284,                 
  label: "Menu",                  
  insert: "before",                  
  customToggle: "",                
  closeOnNavClick: false,         
  openPos: "relative",             
  navClass: "nav-collapse",         
  navActiveClass: "js-nav-active",
  jsClass: "js",                    
  init: function(){},               
  open: function(){},               
  close: function(){}               
});