html,
body {
  top:0; margin:0; padding:0; width:100%; height:100%;
  font-family: 'DM Sans', sans-serif;
}

@media screen and (max-width: 600px) {
  #plan1 {
    display: none;
  }
}

@media screen and (max-width: 600px) {
  #plan3 {
    display: none;
  }
}

.mobile-menu {
  display: none;
}
.mobile-menu-open {
  display: block;
}