* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

#menuBtn.open .bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px) !important;
}

#menuBtn.open .bar:nth-child(2) {
  opacity: 0 !important;
}

#menuBtn.open .bar:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px) !important;
}