body {
    background-color: rgba(128, 128, 128, 0.199);
}

h1,
h2,
h3 {
    text-align: center;
}

button {
    margin: auto;
    display: block;
    background-color: green;
    color: blanchedalmond;
    border-radius: 7px;
    padding: 5px;
    width: 200px;
    margin-bottom: 20px;
    border: none;
}

#decrement-btn {
    background-color: blue;
}

#save-btn {
    background: red;
}