header div#burger{
    justify-self: end;
    width: 30px;
    height: 30px;
    position: relative;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .5s ease-in-out;
    -moz-transition: .5s ease-in-out;
    -o-transition: .5s ease-in-out;
    transition: .5s ease-in-out;
    cursor: pointer;
    grid-column: 6 / 7;
    display: none;
}

header div#burger > span{
    display: block;
    position: absolute;
    height: 5px;
    width: 100%;
    background-color: white;
    border-radius: 11px;
    opacity: 1;
    left: 0;
    -webkit-transform: rotate(0deg);
    -moz-transform: rotate(0deg);
    -o-transform: rotate(0deg);
    transform: rotate(0deg);
    -webkit-transition: .25s ease-in-out;
    -moz-transition: .25s ease-in-out;
    -o-transition: .25s ease-in-out;
    transition: .25s ease-in-out;
}

header div#burger > span:nth-child(1) {
    top: 0px;
  }
  
header div#burger > span:nth-child(2) {
    top: 12px;
}
  
header div#burger > span:nth-child(3) {
    top: 24px;
}
  
header div.open > span:nth-child(1) {
    top: 18px;
    -webkit-transform: rotate(135deg);
    -moz-transform: rotate(135deg);
    -o-transform: rotate(135deg);
    transform: rotate(135deg);
  }
  
  header div.open > span:nth-child(2) {
    opacity: 0;
    left: -60px;
  }
  
  header div.open > span:nth-child(3) {
    top: 18px;
    -webkit-transform: rotate(-135deg);
    -moz-transform: rotate(-135deg);
    -o-transform: rotate(-135deg);
    transform: rotate(-135deg);
  }

@media (max-width: 1200px){

  header div#burger{
    grid-column: 2;
  }

  header > nav > ul > li > img{
    justify-self: start;
  }
}