nav {
  display: flex;
  justify-content: flex-start;
  min-width: 100%;
  margin: 0;
  padding: 0;  
  background-color: #212121;
  box-shadow: 0px 3px 5px rgba(100, 100, 100, 0.49);
  line-height: 2em}
  
nav > a::before {
  display: flex;
  max-height: 45px;
  margin: 0 auto;
  font-weight: normal;
  font-size: 6px;  
  white-space: pre;
  line-height: 1em;
  text-decoration: none;
  content: "                                   __  \a                         __  __    /\\ \\  __ \a    __      ____    ___ /\\_\\/\\_\\   \\_\\ \\/\\_\\    ____    ___    ___  \a  /'__`\\   /',__\\  /'___\\/\\ \\/\\ \\  /'_` \\/\\ \\  /',__\\  /'___\\ / __`\\ \a /\\ \\L\\.\\_/\\__, `\\/\\ \\__/\\ \\ \\ \\ \\/\\ \\L\\ \\ \\ \\/\\__, `\\/\\ \\__//\\ \\L\\ \\ \a \\ \\__/.\\_\\/\\____/\\ \\____\\\\ \\_\\ \\_\\ \\___,_\\ \\_\\/\\____/\\ \\____\\ \\____/ \a  \\/__/\\/_/\\/___/  \\/____/ \\/_/\\/_/\\/__,_ /\\/_/\\/___/  \\/____/\\/___/ "}

nav > a {
  display: flex;
  max-height: 45px;  
  width: 300px;
  margin: 0 auto;  
  color: transparent; 
  text-decoration: none;
  line-height: 0; 
  font-size: 0}
  
nav > ul {
  display: flex;
  min-height: 45px;
  max-height: 45px;  
  width: 35rem;
  margin: 0 auto;
  padding: 0;
  overflow-y: hidden;
  list-style-type: none}
  
nav > ul > li {
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 110px;
  padding: 0;
  background-repeat: no-repeat;
  background-position-y: -50px;
  background-size: 250px}
  
nav > ul > li:nth-child(1) {background-image: url('/img/menu/invader_1.svg')}
nav > ul > li:nth-child(2) {background-image: url('/img/menu/invader_2.svg')}
nav > ul > li:nth-child(3) {background-image: url('/img/menu/invader_3.svg')}
nav > ul > li:nth-child(4) {background-image: url('/img/menu/invader_4.svg')}
nav > ul > li:nth-child(5) {background-image: url('/img/menu/invader_5.svg')}

nav > input, nav > label {display: none}
    
nav > ul > li > a {
  display: flex;
  padding: 1rem;
  font-size: 1rem;
  line-height: 1rem;
  text-decoration: none;
  text-align: center;
  text-transform: uppercase;  
  background-color: transparent;
  background-repeat: no-repeat;
  transition: padding-top .75s}
  
@media (max-width: 860px){
  nav {
    display: block;
    height: 80px}
  
  nav > a::before {
    width: 80vw;
    max-height: 80px;
    margin-left: 3vw;
    margin-top: 1vh;
    font-size: 1.6vw}
  
  nav > a {
    width: 40vw;
    max-height: 80px;
    margin: 0;
    font-size: 0}
  
  nav > ul {
    position: fixed;
    box-sizing: border-box;
    display: block;
    width: 100%;
    max-height: 0px;
    min-height: 0px;      
    padding: 0;
    text-align: center;
    list-style-type: none;
    transition: height .5s linear}
  
  nav > ul > li {
    border-bottom: 2px solid #212121;
    display: block;
    font-size: 2vh;
    padding: 2em 0}
  
  nav > ul > li > a {
    display: flex;
    justify-content: center;
    font-size: 5vh}
      
  nav > input:checked ~ ul {max-height: 100vh}
  nav > input:checked ~ label {text-decoration: line-through}
  
  nav > label {
    display: flex;
    justify-content: center;
    position: fixed;
    top: 2vh;
    right: .5rem;
    width: 7vw;
    min-width: 45px;
    max-width: 60px;    
    max-height: 60px;
    margin: 0;
    padding: 0;
    font-size: 1rem;
    line-height: 6rem;
    text-align: center;
    background: linear-gradient(to bottom, #fff 0%, #fff 10%, transparent 10%, transparent 20%, #fff 20%, #fff 30%, transparent 30%, transparent 40%, #fff 40%, #fff 50%, transparent 50%);
    cursor: pointer}
}

@media screen and (min-width: 861px) {
  nav > ul > li {transition: background-position-y .75s}
  nav > ul > li:nth-child(1) {background-position-x: 19px}
  nav > ul > li:nth-child(2) {background-position-x: -47px}
  nav > ul > li:nth-child(3) {background-position-x: -110px}
  nav > ul > li:nth-child(4) {background-position-x: -165px}
  nav > ul > li:nth-child(5) {
      background-position-y: -80px; 
      background-position-x: 3px} 

  nav > ul > li:hover {background-position-y: -5px}
  nav > ul > li:nth-child(5):hover {background-position-y: -7px}
  nav > ul > li:hover > a {padding-top: 125px}
}