h1 {
  font-family: Verdana;
  font-size: 2em;
  margin: 15px;
}

p {
  text-align: center;
  margin: 10px;
}

fieldset {
  text-align: center;
  display: none;
}

input:focus {
  background-color: lightblue;
}


button {
  display: block;
  margin-left: auto;
  margin-right: auto;
  margin-top: 10px;
}

#start-game {
  background-color: blue;
  color: white;
}

#result {
  display: none;
  text-align: center;
}