Полезные статьи

Не забываем прописывать префиксы!

На этом сайте основное меню:

.nav {
  margin-left: 0;
  margin-bottom: 18px;
  list-style: none;
}

.nav > li > a {
  display: block;
   font-weight: bold;
  text-decoration: none;
  user-select: none;
  padding: 10px 15px;
  outline: none;
  border-radius: 1px;
   -webkit-border-radius: 1px;
  -moz-border-radius: 1px;
  background: linear-gradient(to left, rgba(0,0,0,.3), rgba(0,0,0,.0) 50%, rgba(0,0,0,.3)), linear-gradient(#363636, #828282, #363636);
  background: -webkit-linear-gradient(to left, rgba(0,0,0,.3), rgba(0,0,0,.0) 50%, rgba(0,0,0,.3)), linear-gradient(#363636, #828282, #363636);
  background: -moz-linear-gradient(to left, rgba(0,0,0,.3), rgba(0,0,0,.0) 50%, rgba(0,0,0,.3)), linear-gradient(#363636, #828282, #363636);
  background-size: 100% 100%, auto;
  background-position: 50% 50%;
  box-shadow: inset #ffffff 0 -1px 1px, inset 0 1px 1px #ffffff, #888888 0 0 0 1px, #000 0 10px 15px -10px;
  -moz-box-shadow: inset #ffffff 0 -1px 1px, inset 0 1px 1px #ffffff, #888888 0 0 0 1px, #000 0 10px 15px -10px;
  -webkit-box-shadow: inset #ffffff 0 -1px 1px, inset 0 1px 1px #ffffff, #888888 0 0 0 1px, #000 0 10px 15px -10px;  
  transition: 0.2s;
margin: 6px 0px;
  text-shadow: 1px 1px 3px #000000;
  -moz-text-shadow: 1px 1px 3px #000000;
   -webkit-text-shadow: 1px 1px 3px #000000;
  color: #ffffff;
  font-size: 18px;
}
.nav > li > a:hover,
.nav > li > a:focus {
  text-decoration: none;
  background-size: 140% 100%, auto;
  color: #ff0000;
}

.nav > .active > a {
  text-decoration: none;
  background-size: 140% 100%, auto;
  top: 1px;
  color: #0000FF;
  box-shadow: inset #ccc 0 -1px 1px, inset 0 1px 1px #ccc, #777777 0 0 0 1px, 0 10px 10px -9px #000;
  -moz-box-shadow: inset #ccc 0 -1px 1px, inset 0 1px 1px #ccc, #777777 0 0 0 1px, 0 10px 10px -9px #000;
  -webkit-box-shadow: inset #ccc 0 -1px 1px, inset 0 1px 1px #ccc, #777777 0 0 0 1px, 0 10px 10px -9px #000;
  text-shadow: 1px 1px 3px #fff;
    -webkit-text-shadow: 1px 1px 3px #fff;
    -moz-text-shadow: 1px 1px 3px #fff;
}

.nav > .active > a:hover,
.nav > .active > a:focus{
  text-decoration: none;
  background-size: 140% 100%, auto;
  color: #0000CD;
}

Горизонтальное меню тут http://guamka.ru :

.nav-pills > li > a {
  padding-top: 8px;
  padding-bottom: 8px;
  margin-top: 2px;
  margin-bottom: 2px;
margin-left: 5px;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  border-radius: 5px;
  color: #FFFAFA;
  font-size: 18px;
font-weight: bold;
  text-shadow: 1px 2px 5px #1E3B82;
   display: inline-block;
    transition: .5s;
-webkit-transition: .5s;
    -moz-transition: .5s;
    box-shadow: inset rgba(39,64,139,.5) -3px -3px 8px, inset rgba(255,250,250,.9) 3px 3px 8px, rgba(39,64,139,.8) 3px 3px 8px -3px;
   -moz-box-shadow: inset rgba(39,64,139,.5) -3px -3px 8px, inset rgba(255,250,250,.9) 3px 3px 8px, rgba(39,64,139,.8) 3px 3px 8px -3px;
   -webkit-box-shadow: inset rgba(39,64,139,.5) -3px -3px 8px, inset rgba(255,250,250,.9) 3px 3px 8px, rgba(39,64,139,.8) 3px 3px 8px -3px;
}
.nav-pills > li > a:hover,
.nav-pills > li > a:focus {
  color: #FF0000 !important;
  text-shadow: 1px 2px 5px #FFFAFA !important;
  -webkit-box-shadow: inset  0 0px 5px 4px rgba(39,64,139,.9), inset  0 0 0 2em rgba(255,250,250,.7);
  -moz-box-shadow: inset  0 0px 5px 4px rgba(39,64,139,.9), inset  0 0 0 2em rgba(255,250,250,.7);
  box-shadow: inset  0 0px 5px 4px rgba(39,64,139,.9), inset  0 0 0 2em rgba(255,250,250,.7);
}
.nav-pills > .active > a,
.nav-pills > .active > a:hover,
.nav-pills > .active > a:focus {
  color: #FFD700;
  background-image: url("../images/stars.gif") !important;
 background-repeat: repeat;
   background-color: transparent !important;
    text-shadow: 1px 1px 2px #1E3B82;
}

гифка