.nav * {
  box-sizing: border-box;
  transition: all .35s ease;
}

.nav li {
  display: inline-block;
  list-style: outside none none;
}

@media (min-width: 992px) {
  .nav li {
    margin-left: 3px;
    margin-right: 3px;
  }
}

@media (min-width: 1200px) {
  .nav li {
    margin-left: 15px;
    margin-right: 15px;
  }
}

.nav a {
  color: rgba(255,255,255,.5);
  position: relative;
  text-decoration: none;
  font-size: 18px;
}

.nav a::before, .nav a::after {
  content: '';
  height: 14px;
  width: 24px;
  position: absolute;
  transition: all .35s ease;
  opacity: 0;
}

.nav a::before {
  content: '';
  right: 0;
  top: 0;
  border-top: 3px solid #ffffff;
  border-right: 3px solid #ffffff;
  /*border-radius: 15px;*/
  transform: translate(-100%, 50%);
}

.nav a:after {
  content: '';
  left: 0;
  bottom: 0;
  border-bottom: 3px solid #ffffff;
  border-left: 3px solid #ffffff;
  transform: translate(100%, -50%);
  /*border-radius: 15px;*/
}

.nav a:hover:before, .nav a:hover:after {
  transform: translate(0,0);
  opacity: 1;
}

.nav a:hover {
  color: #ffffff;
}