html {
    height: 100%
}

body {
    background-image: url("../images/background.png");
    background-size: cover;
    background-repeat: no-repeat;
    font-family: Helvetica, Arial, sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
}

table,
th,
td {
    border: 1px solid black;
}

table {
    margin: 0;
    padding: 0;
    table-layout: fixed;
    margin-bottom: 1em;
}

table caption {
    font-size: 1.5em;
    margin: .5em 0 .75em;
}

table tr {
    background-color: rgb(179, 255, 179);
    border: 1px solid #ddd;
    padding: .35em;
}

table th,
table td {
    padding: .625em;
    text-align: center;
}

table th {
    font-size: .85em;
    letter-spacing: .1em;
    text-transform: uppercase;
    white-space: pre-wrap;
}

input[type="submit"] {
    font-size: 2em;
}

input[type="submit"]:hover {
    font-size: 2em;
    background-color: rgb(179, 255, 179);
}

input[type="number"] {
    width: 80%;
}

div {
    margin: 1%;
}

div:has(> input) {
    display: block;
    text-align: center;
    margin-top: 20px;
}

button {
    font-size: 2.5em;
    margin: 1%;

}

button:hover {
    background-color: rgb(179, 255, 179);
}