.header{
	position: fixed;
	top: 0;
	height: 5%;
	width: 100%;
    background: rgba(0,0,0,0.4);
    z-index: 10;
    border-bottom: 1px solid white;
}

.listContainer{
  position: absolute;
  width: 100%;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
  -moz-transform: translate(-50%, -50%);
  transform: translate(-50%, -50%);
}

.header ul{
    list-style-type: none;
    display: flex;
    justify-content: space-between;
    margin: 0;
    padding: 0 2vw;
    margin-top: 5px
}

a,a:visited,a:hover,a:active{
  -webkit-backface-visibility:hidden;
  backface-visibility:hidden;
  position:relative;
  transition:0.5s color ease;
  text-decoration:none;
  color:azure;
  font-size:1em;
}
a:hover{
  color:lightgreen;
}
a.before:before,a.after:after{
  content: "";
  transition:0.5s all ease;
  -webkit-backface-visibility:hidden;
  backface-visibility:hidden;
  position:absolute;
}
a.before:before{
  top:-0.25em;
}
a.after:after{
  bottom:-0.25em;
}
.square{
  box-sizing:border-box;
  margin-left:-0.4em;
  position:relative;
  font-size:1.3vw;
  overflow:hidden;
}

@media screen and (max-width: 1500px) {
  .square {
    font-size:1.7vw;
  }
}

@media screen and (max-width: 765px) {
  .square {
    font-size:2vw;
  }
}

@media screen and (max-width: 550px) {
  .square {
    font-size:2.5vw;
  }
}

.square a{
  position:static;
  font-size:100%;
  padding:0.2em 0.4em;
}