body#picker {
  display: grid;
  width: 100vw;
  height: 100vh;
  margin: 0;
  place-items: center;
  background: #010618;
  color: #ddd;
  text-align: center;
  font-family: Verdana, sans-serif;
}

main#battleground {
  display: grid;
  place-items: center;
}

main#battleground h1#title {
  margin-top: 0;
}

iframe html {
  width: 400px;
  height: 300px;
}

 #month #month-label {
 	display: inline-block;
 }

 #month .button-month {
 	cursor: pointer;
 }