h1 {
    text-align: center;
    font-family: arial;
    font-size: 3rem;
}

#txt {
    text-align: center;
    font-family: arial;
}

h3 {
    color: red;
    font-family: arial;
    font-size: 1.2rem;
}

body {
    background-color: gray;
}