body{
  text-align: center;
  background-color: darkgreen;
}

div{
  background-color: gold;
  border: dotted red 5px;
}

h1 {
  color: #fff;
  text-decoration: underline #fff;
  border: dotted gold 5px;
}

button{
  padding: 1em;
  background-color: black;
  color: #FFF;
}