body {
    background-color: gray;
    text-align: center;
    background-image: url("https://csumb.space/cst/336/midterm/practice/img/pets.png");
    background-size: cover;
}

#rubric {
    display: flex;
    justify-content: center;
    margin: 0 auto;
}

h3 {
    color: red
}

button {
    margin: 10px;
}

input {
    width: 6em;
}

#shuffled {
    width: auto;
}