.menu a { 
  text-decoration: none; 
  color: #fff; 
text-shadow: 0 1px #2b6a83; 
  font-weight: bold; 
  float: left; 
  display: block; 
} 
.menu a:hover { color: #276a85; text-shadow: 0 1px #e1eff5; } 
.drop-down a { 
  float: none; 
  min-width: 90px; 
} 

.menu a { 
  display: block; 
  padding: 10px 15px; 
} 

.drop-down-menu { 
  float: left; 
  display: block; 
} 

.menu-title { 
  cursor: default; 
  padding: 10px 15px; 
} 

.activate { 
  display: none; 

  position: absolute; 
  cursor: pointer; 
  width: 100%; 
  height: 40px; 
  margin: 0 0 0 -15px; 
  opacity: 0; 
} 

@media only screen and (min-width: 800px) { 

  .drop-down-menu:hover .drop-down { 
  display: block; 
  }  

  .drop-down { 
  position: absolute; 
  } 

} 

@media only screen and (max-width: 799px) { 

  .menu a, .drop-down-menu { 
  float: none; 
  } 

  .activate { 
  display: block; 
  } 

} 

/* Skin */ 

.menu a, .drop-down-menu { 
  background: #44a7cf; 
  background: -webkit-gradient(linear, left top, left bottom, from(#44a7cf), to(#317794)); 
  background: -moz-linear-gradient(top, #44a7cf, #317794); 
} 

.menu a:hover, .drop-down-menu:hover { 
  background: #5a6470; 
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#feffff), color-stop(100%,#a2cfe0)); 
  background: -moz-linear-gradient(top, #feffff 0%, #a2cfe0 100%); 
} 

.drop-down a { 
  background: #222; 
} 

.drop-down a:hover { 
  background: #111; 
} 

@media only screen and (min-width: 800px) { 

  .first { 
  border-top-left-radius: 8px; 
  border-bottom-left-radius: 8px; 
  } 

  .last { 
  border-top-right-radius: 8px; 
  border-bottom-right-radius: 8px; 
  } 

  .drop-down .last { 
  border-radius: 0; 
  border-bottom-left-radius: 8px; 
  border-bottom-right-radius: 8px; 
  } 

} 

@media only screen and (max-width: 799px) { 

  .menu { 
background: #44a7cf; 
  background: -webkit-gradient(linear, left top, left bottom, from(#44a7cf), to(#317794)); 
  background: -moz-linear-gradient(top, #44a7cf, #317794); 
} 
  :checked ~ .menu-title { 
  background: #495261; 
  background: -webkit-gradient(linear, left top, left bottom, color-stop(0%,#495261), color-stop(100%,#38404b)); 
  background: -moz-linear-gradient(top, #495261 0%, #38404b 100%); 
  } 

  .menu a, .drop-down-menu { 
  background: none; 
  } 

  .drop-down a { 
  background: #222; 
  } 

} 

/* IE */ 

.ie8 .drop-down-menu:hover .drop-down { display: block; }  
.ie8 .drop-down { position: absolute; } 

.drop-down { 
  max-height: 0; 
  overflow: hidden; 
} 

.ie8 .drop-down-menu:hover .drop-down { 
  max-height: 200px; 
} 

@media only screen and (min-width: 800px) { 

  .drop-down-menu:hover .drop-down { 
  max-height: 200px; 
  }  

} 

@media only screen and (max-width: 799px) { 

  .activate:checked ~ .drop-down { 
  max-height: 200px; 
  }  

} 

.drop-down, .menu a, .drop-down-menu { 
  -webkit-transform: translateZ(0);  
  -webkit-transition: all 0.3s; 
  -moz-transition: all 0.3s; 
  -o-transition: all 0.3s; 
  transition: all 0.3s; 
}

<nav class="menu">  
<a class="first" href="/">Главная</a>  
  <a href="/load">Форум</a>  
  <a href="/load">Фильмы</a>  
  <a href="/load">Мульфильмы</a>  
  <a href="/load">Поиск</a>  
  <a href="/load">Выход</a>  
  <a class="last" href="/load">Добавить материал</a>  
  </nav>