.fullscreen-toggle{
  width:40px;
  height:40px;
  display:grid;
  place-items:center;
  flex:0 0 40px;
  margin-left:4px;
  border:1px solid #294139;
  border-radius:12px;
  background:#10201d;
  color:#d8e3df;
  cursor:pointer;
  transition:background .18s ease,border-color .18s ease,color .18s ease,transform .18s ease;
}
.fullscreen-toggle:hover{
  background:#153027;
  border-color:#3d6a55;
  color:#91f23f;
}
.fullscreen-toggle:active{transform:scale(.96)}
.fullscreen-toggle svg{width:19px;height:19px;display:block}
.fullscreen-toggle:focus-visible{outline:2px solid #91f23f;outline-offset:2px}
@media(max-height:850px){
  .fullscreen-toggle{width:34px;height:34px;flex-basis:34px;border-radius:10px}
  .fullscreen-toggle svg{width:17px;height:17px}
}