h1 {
  color: black;
}
h3{
  color: black;
}

body {
  background-color: lime;
  color: black;
  font-family: Arial;
}

button {
  background-color: cornflowerBlue;
  color: black;
  margin: 20px;
  width: 120px;
  height: 40px;
  }