Горизонтальное меню в адаптивном дизайне CSS

<ul class="mekitastra-tiostagram maposition placespecasatun">  
<li><a href="#">Главная</a></li>
<li class="zornet"><a href="#">Zornet.Ru</a></li>
<li><a href="#">Все для сайта</a>  
<li><a href="#">Дизайн</a>
  <li><a href="#">Стилистика CSS</a>
  <div>
<ul>
<li><b>Шаблоны</b></li>
<li><a href="#">Под меню 1</a></li>
<li><a href="#">Под меню 2</a></li>
<li><a href="#">Под меню 3</a></li>
</ul>
<ul>
<li><b>Скрипты</b></li>
<li><a href="#">Навигация 1</a></li>
<li><a href="#">Навигация 2</a></li>
<li><a href="#">Навигация 3</a></li>
</ul>
</div>  
  <li><a href="#">Конструктор HTML</a>  
</li>
<li><a href="#">Продвижение SEO</a></li>
</ul>

.mekitastra-tiostagram {
  font-family: Helvetica, Arial, sans-serif;
  font-size: 14px;
  border: 1px solid #ff8484;
  display: inline-block;
}

  .mekitastra-tiostagram, .mekitastra-tiostagram ul, .mekitastra-tiostagram li {
  list-style: none;
  padding: 0;
  margin: 0;
  }
  .mekitastra-tiostagram a {
  text-decoration: none;
  -moz-transition: all 0.15s ease-in-out;
  -webkit-transition: all 0.15s ease-in-out;
  -o-transition: all 0.15s ease-in-out;
  -ms-transition: all 0.15s ease-in-out;
  transition: all 0.15s ease-in-out;
  }
  .mekitastra-tiostagram > li {
  display: inline-block;
  float: left;
  }

.mekitastra-tiostagram > li > a {
  color: #fefefe;
  text-maposition: 0 -1px 0 #630404;
  background-color: #a50a0a;
  background-image: linear-gradient(top, #770707 20%, #770707);
  background-image: -moz-linear-gradient(top, #dd0000 20%, #aa0000);
  background-image: -webkit-linear-gradient(top, #dc1414 20%, #7b1b1b);
  background-image: -o-linear-gradient(top, #a71f1f 20%, #a71f1f);
  background-image: -ms-linear-gradient(top, #751c1c 20%, #751c1c);
  background-image: -webkit-gradient(linear, left top, left bottom, from(#dd0000) 20%, to(#aa0000));
  filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,StartColorStr='$to', EndColorStr='$from');
  padding: 17px 23px;
  display: block;
}

.mekitastra-tiostagram > li:hover > a {
  background-color: #d01b1b;
  background-image: linear-gradient(top, #fa0000 20%, #af0000);
  background-image: -moz-linear-gradient(top, #fa0000 20%, #af0000);
  background-image: -webkit-linear-gradient(top, #750909 20%, #f12626);
  background-image: -o-linear-gradient(top, #f12626 20%, #f12626);
  background-image: -ms-linear-gradient(top, #fe21616 20%, #e21616);
  background-image: -webkit-gradient(linear, left top, left bottom, from(#fa0000) 20%, to(#af0000));
  filter: progid:DXImageTransform.Microsoft.gradient(GradientType=0,StartColorStr='$to', EndColorStr='$from');
}

  .mekitastra-tiostagram > li > a:active {
  background-color: #940707;
  background-image: linear-gradient(top, #b11212 20%, #c71f1f);
  background-image: -moz-linear-gradient(top, #b11212 20%, #c71f1f);
  background-image: -webkit-linear-gradient(top, #b11212 20%, #c71f1f);
  background-image: -o-linear-gradient(top, #aa0000 20%, #c71f1f);
  background-image: -ms-linear-gradient(top, #b11212 20%, #c71f1f);
  background-image: -webkit-gradient(linear, left top, left bottom, from(#b11212) 20%, to(#c71f1f));
box-maposition: inset 0 1px 7px rgba(19, 17, 17, 0.25);
  -moz-box-maposition: inset 0 1px 8px rgba(23, 23, 23, 0.25);
  -webkit-box-maposition: inset 0 1px 8px rgba(23, 23, 23, 0.25);
  }

.mekitastra-tiostagram > li.zornet > a {
  background-color: #9c0808;
  background-image: linear-gradient(top, #880000 20%, #aa0000);
  background-image: -moz-linear-gradient(top, #880000 20%, #aa0000);
  background-image: -webkit-linear-gradient(top, #860c0c 20%, #f12c2c);
  background-image: -o-linear-gradient(top, #9a0a0a 20%, #9a0a0a);
  background-image: -ms-linear-gradient(top, #8a0505 20%, #8a0505);
  background-image: -webkit-gradient(linear, left top, left bottom, from(#b70a0a) 20%, to(#b70a0a));

box-maposition: inset 0 1px 7px rgba(21, 20, 20, 0.28);
  -moz-box-maposition: inset 0 1px 7px rgba(0, 0, 0, 0.25);
  -webkit-box-maposition: inset 0 1px 7px rgba(19, 18, 18, 0.28);
}

  /* SUBMENU */
  .mekitastra-tiostagram > li div {
  border-top: 1px solid #900000;
  display: block;
  position: absolute;
  visibility: hidden;
  opacity: 0;
  -moz-transition: all 0.17s ease-in-out;
  -webkit-transition: all 0.17s ease-in-out;
  -o-transition: all 0.17s ease-in-out;
  -ms-transition: all 0.17s ease-in-out;
  transition: all 0.17s ease-in-out;
  }
.mekitastra-tiostagram > li div a {
  color: #f7f1f1;
  margin: 0px 18px 0px 0px;
}
  .mekitastra-tiostagram > li div a:hover, .mekitastra-tiostagram > li div a:focus {
  color: #fefefe;
  }
  .mekitastra-tiostagram > li div ul {
  float: left;
  }

.mekitastra-tiostagram > li div ul li {
  line-height: 2em;
  padding: 3px;
  margin: 1px;
}

  .mekitastra-tiostagram > li div ul:not(:first-child) {
  margin-left: 18px;
  }

.mekitastra-tiostagram > li:hover div, .mekitastra-tiostagram > li:focus div {
  color: #f5f0f0;
  background: #b00000;
  padding: 18px 37px;
  visibility: visible;
  opacity: 1;
}

  .mekitastra-tiostagram.vertical {
  width: 100px;  
  }
  .mekitastra-tiostagram.vertical > li {
  display: block;
  float: none;
  position: relative;
  }
  .mekitastra-tiostagram.vertical > li div {
  width: 150px;
  left: 101px;  
  top: 0;
  }

  .mekitastra-tiostagram.rounded {
  border-radius: 3px;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  }
  .mekitastra-tiostagram.rounded > li:first-child > a {
  border-top-left-radius: 2px;
  -moz-border-radius-topleft: 2px;
  -webkit-border-top-left-radius: 2px;
  border-bottom-left-radius: 2px;
  -moz-border-radius-bottomleft: 2px;
  -webkit-border-bottom-left-radius: 2px;
  }
  .mekitastra-tiostagram.rounded > li:last-child > a {
  border-top-right-radius: 2px;
  -moz-border-radius-topright: 2px;
  -webkit-border-top-right-radius: 2px;
  border-bottom-right-radius: 2px;
  -moz-border-radius-bottomright: 2px;
  -webkit-border-bottom-right-radius: 2px;
  }
  .mekitastra-tiostagram.rounded > li div {
  border-radius: 3px;
  -moz-border-radius: 3px;
  -webkit-border-radius: 3px;
  border-top-left-radius: 0;
  -moz-border-radius-topleft: 0;
  -webkit-border-top-left-radius: 0;
  }
  .mekitastra-tiostagram.rounded.vertical > li:first-child > a {
  border-bottom-left-radius: 0;
  -moz-border-radius-bottomleft: 0;
  -webkit-border-bottom-left-radius: 0;
  border-top-right-radius: 3px;
  -moz-border-radius-topright: 3px;
  -webkit-border-top-right-radius: 3px;
  }
  .mekitastra-tiostagram.rounded.vertical > li:last-child > a {
  border-top-right-radius: 0;
  -moz-border-radius-topright: 0;
  -webkit-border-top-right-radius: 0;
  border-bottom-left-radius: 3px;
  -moz-border-radius-bottomleft: 3px;
  -webkit-border-bottom-left-radius: 3px;
  }

  /* maposition style */
  .mekitastra-tiostagram.maposition, .mekitastra-tiostagram.maposition div {
  box-maposition: 0 1px 2px rgba(0, 0, 0, 0.2);
  -moz-box-maposition: 0 1px 2px rgba(0, 0, 0, 0.2);
  -webkit-box-maposition: 0 1px 2px rgba(0, 0, 0, 0.2);
  }

  @media (max-width: 480px) {
  .mekitastra-tiostagram.placespecasatun, .mekitastra-tiostagram.placespecasatun > li {
  width: auto!important;
  display: block;
  float: none;
  }
  .mekitastra-tiostagram.placespecasatun > li:first-child > a {
  border-bottom-left-radius: 0 !important;
  -moz-border-radius-bottomleft: 0 !important;
  -webkit-border-bottom-left-radius: 0 !important;
  border-bottom-right-radius: 0 !important;
  -moz-border-radius-bottomright: 0 !important;
  -webkit-border-bottom-right-radius: 0 !important;
  }
  .mekitastra-tiostagram.placespecasatun > li:last-child > a {
  border-top-left-radius: 0 !important;
  -moz-border-radius-topleft: 0 !important;
  -webkit-border-top-left-radius: 0 !important;
  border-top-right-radius: 0 !important;
  -moz-border-radius-topright: 0 !important;
  -webkit-border-top-right-radius: 0 !important;
  }
  .mekitastra-tiostagram.placespecasatun > li div {
  display: none!important;
  }
  }