h1 {
  color: green;
  font-family: 'Courier New', Courier, monospace;
}
h2 {
  color: green;
  font-family: 'Courier New', Courier, monospace;
}
p {
  color: green;
  font-family: 'Courier New', Courier, monospace;
}
button {
    font-size: 25px;
    color: rgb(0, 186, 0);
    background-color: black;
    border: 2px solid rgb(0, 186, 0);
    border-radius: 5px;
    padding: 2px 5px 0px 5px;
    font-family: 'Courier New', Courier, monospace;
}
hr {
    border: 1px solid rgb(0, 186, 0);
}
#main {
    width: 600px;
    margin: auto;
    padding: 5px;
    border-radius: 5px;
    border: 2px solid rgb(0, 186, 0);
}