nav,
nav ul {
  position: fixed;
  width: 100%;
  top:30px;
}
nav {
  box-shadow: inset 0 0 0 1px rgba(255,255,255,0.3);
  opacity: 0;
  -webkit-transform: scale(0.3);
      -ms-transform: scale(0.3);
          transform: scale(0.3);
  -webkit-transition: all 0.25s;
          transition: all 0.25s;
}
nav ul li {
  display: table;
  width: 100%;
  height:60px;
  border-bottom: 1px solid rgba(255,255,255,0.3);
  background: rgba(255,255,255,0.9);
  -webkit-perspective: 0px;
          perspective: 0px;
  -webkit-transform: rotateX(-90deg) scale(0.5);
          transform: rotateX(-90deg) scale(0.5);
  -webkit-transition: all 0.3s ease 0.1s;
          transition: all 0.3s ease 0.1s;
}
nav ul li a {
  display: table-cell;
  vertical-align: middle;
  text-align: center;
  text-decoration: none;
  font-family: DINWeb-Cond; src: url("DINWeb-Cond.woff") format("woff");
  font-size:24px;
  text-transform: uppercase;
  color: #407DA7;
}
nav ul li a:hover {
  background: rgba(255,255,255,0.1);
}
#toggle {
  display: none;
}
#toggle + #toggle-btn,
.nav-icon {
  position: fixed;
  top: 15px;
  right: 15px;
  border-radius: 3px;
  cursor: pointer;
}
#toggle + #toggle-btn {
  height: 40px;
  width: 40px;
  z-index: 1000;
  background: rgba(0,0,0,0.0);
}
.nav-icon,
.nav-icon:before,
.nav-icon:after {
  position: fixed;
  height: 4px;
  width: 40px;
  margin: 14px 0;
  z-index: 900;
  border-radius: 3px;
  background: #000;
  -webkit-transition: all 0.25s;
          transition: all 0.25s;
}
.nav-icon:before {
  content: "";
  margin-top: -18px;
}
.nav-icon:after {
  content: "";
  margin-top: 18px;
}
#toggle:checked ~ nav {
  opacity: 1;
  -webkit-transform: scale(0.8);
      -ms-transform: scale(0.8);
          transform: scale(0.8);
}
#toggle:checked ~ .nav-icon {
  background: rgba(255,0,0,0);
}
#toggle:checked ~ .nav-icon:before {
  -webkit-transform: rotate(-225deg);
      -ms-transform: rotate(-225deg);
          transform: rotate(-225deg);
  margin-top: 0;
}
#toggle:checked ~ .nav-icon:after {
  -webkit-transform: rotate(225deg);
      -ms-transform: rotate(225deg);
          transform: rotate(225deg);
  margin-top: 0;
}
#toggle:checked ~ nav ul li {
  -webkit-transform: rotateY(0deg) scale(1);
          transform: rotateY(0deg) scale(1);
}